{
  "name": "TuneStand instrument tuning dataset",
  "version": "1.0.0",
  "license": "CC BY 4.0",
  "licenseUrl": "https://creativecommons.org/licenses/by/4.0/",
  "attribution": "Data from TuneStand (https://tunestand.com)",
  "source": "https://tunestand.com/data",
  "method": "Frequencies are computed from the MIDI note number with f = 440 * 2^((m - 69) / 12), twelve tone equal temperament, A4 = 440 Hz. No frequency in this dataset is transcribed by hand.",
  "reference": {
    "a4": 440,
    "temperament": "equal"
  },
  "count": 45,
  "tunings": [
    {
      "id": "guitar-standard",
      "instrument": "guitar",
      "instrumentLabel": "6-string guitar",
      "tuningId": "standard",
      "tuningLabel": "Standard",
      "notation": "EADGBE",
      "category": "standard",
      "url": "https://tunestand.com/tuner/guitar",
      "strings": [
        {
          "position": 6,
          "label": "6th (lowest)",
          "note": "E2",
          "midi": 40,
          "hz": 82.41
        },
        {
          "position": 5,
          "label": "5th",
          "note": "A2",
          "midi": 45,
          "hz": 110
        },
        {
          "position": 4,
          "label": "4th",
          "note": "D3",
          "midi": 50,
          "hz": 146.83
        },
        {
          "position": 3,
          "label": "3rd",
          "note": "G3",
          "midi": 55,
          "hz": 196
        },
        {
          "position": 2,
          "label": "2nd",
          "note": "B3",
          "midi": 59,
          "hz": 246.94
        },
        {
          "position": 1,
          "label": "1st (highest)",
          "note": "E4",
          "midi": 64,
          "hz": 329.63
        }
      ],
      "relativeToStandard": "This is the reference every other guitar tuning on this site is measured against.",
      "commonIn": [
        "almost all popular and classical guitar repertoire"
      ]
    },
    {
      "id": "guitar-drop-d",
      "instrument": "guitar",
      "instrumentLabel": "6-string guitar",
      "tuningId": "drop-d",
      "tuningLabel": "Drop D",
      "notation": "DADGBE",
      "category": "drop",
      "url": "https://tunestand.com/tuner/guitar/drop-d",
      "strings": [
        {
          "position": 6,
          "label": "6th (lowest)",
          "note": "D2",
          "midi": 38,
          "hz": 73.42
        },
        {
          "position": 5,
          "label": "5th",
          "note": "A2",
          "midi": 45,
          "hz": 110
        },
        {
          "position": 4,
          "label": "4th",
          "note": "D3",
          "midi": 50,
          "hz": 146.83
        },
        {
          "position": 3,
          "label": "3rd",
          "note": "G3",
          "midi": 55,
          "hz": 196
        },
        {
          "position": 2,
          "label": "2nd",
          "note": "B3",
          "midi": 59,
          "hz": 246.94
        },
        {
          "position": 1,
          "label": "1st (highest)",
          "note": "E4",
          "midi": 64,
          "hz": 329.63
        }
      ],
      "relativeToStandard": "Lower the 6th string one whole step, from E2 to D2. The other five strings do not move.",
      "commonIn": [
        "rock",
        "metal",
        "grunge",
        "fingerstyle in D"
      ]
    },
    {
      "id": "guitar-drop-c",
      "instrument": "guitar",
      "instrumentLabel": "6-string guitar",
      "tuningId": "drop-c",
      "tuningLabel": "Drop C",
      "notation": "CGCFAD",
      "category": "drop",
      "url": "https://tunestand.com/tuner/guitar/drop-c",
      "strings": [
        {
          "position": 6,
          "label": "6th (lowest)",
          "note": "C2",
          "midi": 36,
          "hz": 65.41
        },
        {
          "position": 5,
          "label": "5th",
          "note": "G2",
          "midi": 43,
          "hz": 98
        },
        {
          "position": 4,
          "label": "4th",
          "note": "C3",
          "midi": 48,
          "hz": 130.81
        },
        {
          "position": 3,
          "label": "3rd",
          "note": "F3",
          "midi": 53,
          "hz": 174.61
        },
        {
          "position": 2,
          "label": "2nd",
          "note": "A3",
          "midi": 57,
          "hz": 220
        },
        {
          "position": 1,
          "label": "1st (highest)",
          "note": "D4",
          "midi": 62,
          "hz": 293.66
        }
      ],
      "relativeToStandard": "Take Drop D and lower every string another whole step: the 6th goes from D2 to C2 and the remaining five drop a whole step each.",
      "commonIn": [
        "metalcore",
        "modern metal",
        "post-hardcore"
      ]
    },
    {
      "id": "guitar-drop-b",
      "instrument": "guitar",
      "instrumentLabel": "6-string guitar",
      "tuningId": "drop-b",
      "tuningLabel": "Drop B",
      "notation": "BF#BEG#C#",
      "category": "drop",
      "url": "https://tunestand.com/tuner/guitar/drop-b",
      "strings": [
        {
          "position": 6,
          "label": "6th (lowest)",
          "note": "B1",
          "midi": 35,
          "hz": 61.74
        },
        {
          "position": 5,
          "label": "5th",
          "note": "F#2",
          "midi": 42,
          "hz": 92.5
        },
        {
          "position": 4,
          "label": "4th",
          "note": "B2",
          "midi": 47,
          "hz": 123.47
        },
        {
          "position": 3,
          "label": "3rd",
          "note": "E3",
          "midi": 52,
          "hz": 164.81
        },
        {
          "position": 2,
          "label": "2nd",
          "note": "G#3",
          "midi": 56,
          "hz": 207.65
        },
        {
          "position": 1,
          "label": "1st (highest)",
          "note": "C#4",
          "midi": 61,
          "hz": 277.18
        }
      ],
      "relativeToStandard": "Drop C moved down one more semitone, so the 6th string sits on B1, a perfect fourth below standard E2.",
      "commonIn": [
        "djent",
        "deathcore",
        "modern metal"
      ]
    },
    {
      "id": "guitar-drop-a",
      "instrument": "guitar",
      "instrumentLabel": "6-string guitar",
      "tuningId": "drop-a",
      "tuningLabel": "Drop A",
      "notation": "AEADF#B",
      "category": "drop",
      "url": "https://tunestand.com/tuner/guitar/drop-a",
      "strings": [
        {
          "position": 6,
          "label": "6th (lowest)",
          "note": "A1",
          "midi": 33,
          "hz": 55
        },
        {
          "position": 5,
          "label": "5th",
          "note": "E2",
          "midi": 40,
          "hz": 82.41
        },
        {
          "position": 4,
          "label": "4th",
          "note": "A2",
          "midi": 45,
          "hz": 110
        },
        {
          "position": 3,
          "label": "3rd",
          "note": "D3",
          "midi": 50,
          "hz": 146.83
        },
        {
          "position": 2,
          "label": "2nd",
          "note": "F#3",
          "midi": 54,
          "hz": 185
        },
        {
          "position": 1,
          "label": "1st (highest)",
          "note": "B3",
          "midi": 59,
          "hz": 246.94
        }
      ],
      "relativeToStandard": "Drop B lowered another whole step, putting the 6th string on A1, a fifth below the standard low E.",
      "commonIn": [
        "deathcore",
        "nu metal",
        "baritone guitar repertoire"
      ]
    },
    {
      "id": "guitar-drop-c-sharp",
      "instrument": "guitar",
      "instrumentLabel": "6-string guitar",
      "tuningId": "drop-c-sharp",
      "tuningLabel": "Drop C sharp",
      "notation": "C#G#C#F#A#D#",
      "category": "drop",
      "url": "https://tunestand.com/tuner/guitar/drop-c-sharp",
      "strings": [
        {
          "position": 6,
          "label": "6th (lowest)",
          "note": "C#2",
          "midi": 37,
          "hz": 69.3
        },
        {
          "position": 5,
          "label": "5th",
          "note": "G#2",
          "midi": 44,
          "hz": 103.83
        },
        {
          "position": 4,
          "label": "4th",
          "note": "C#3",
          "midi": 49,
          "hz": 138.59
        },
        {
          "position": 3,
          "label": "3rd",
          "note": "F#3",
          "midi": 54,
          "hz": 185
        },
        {
          "position": 2,
          "label": "2nd",
          "note": "A#3",
          "midi": 58,
          "hz": 233.08
        },
        {
          "position": 1,
          "label": "1st (highest)",
          "note": "D#4",
          "midi": 63,
          "hz": 311.13
        }
      ],
      "relativeToStandard": "Drop D lowered a semitone across all six strings, or equivalently half-step-down tuning with the 6th string dropped a whole step.",
      "commonIn": [
        "hard rock",
        "metal",
        "alternative rock"
      ]
    },
    {
      "id": "guitar-half-step-down",
      "instrument": "guitar",
      "instrumentLabel": "6-string guitar",
      "tuningId": "half-step-down",
      "tuningLabel": "Half step down",
      "notation": "EbAbDbGbBbEb",
      "category": "lowered",
      "url": "https://tunestand.com/tuner/guitar/half-step-down",
      "strings": [
        {
          "position": 6,
          "label": "6th (lowest)",
          "note": "D#2",
          "midi": 39,
          "hz": 77.78
        },
        {
          "position": 5,
          "label": "5th",
          "note": "G#2",
          "midi": 44,
          "hz": 103.83
        },
        {
          "position": 4,
          "label": "4th",
          "note": "C#3",
          "midi": 49,
          "hz": 138.59
        },
        {
          "position": 3,
          "label": "3rd",
          "note": "F#3",
          "midi": 54,
          "hz": 185
        },
        {
          "position": 2,
          "label": "2nd",
          "note": "A#3",
          "midi": 58,
          "hz": 233.08
        },
        {
          "position": 1,
          "label": "1st (highest)",
          "note": "D#4",
          "midi": 63,
          "hz": 311.13
        }
      ],
      "relativeToStandard": "Every string down one semitone. The intervals between strings are untouched, so every shape you know still works, one fret lower in pitch.",
      "commonIn": [
        "blues",
        "hard rock",
        "classic rock"
      ]
    },
    {
      "id": "guitar-whole-step-down",
      "instrument": "guitar",
      "instrumentLabel": "6-string guitar",
      "tuningId": "whole-step-down",
      "tuningLabel": "Whole step down",
      "notation": "DGCFAD",
      "category": "lowered",
      "url": "https://tunestand.com/tuner/guitar/whole-step-down",
      "strings": [
        {
          "position": 6,
          "label": "6th (lowest)",
          "note": "D2",
          "midi": 38,
          "hz": 73.42
        },
        {
          "position": 5,
          "label": "5th",
          "note": "G2",
          "midi": 43,
          "hz": 98
        },
        {
          "position": 4,
          "label": "4th",
          "note": "C3",
          "midi": 48,
          "hz": 130.81
        },
        {
          "position": 3,
          "label": "3rd",
          "note": "F3",
          "midi": 53,
          "hz": 174.61
        },
        {
          "position": 2,
          "label": "2nd",
          "note": "A3",
          "midi": 57,
          "hz": 220
        },
        {
          "position": 1,
          "label": "1st (highest)",
          "note": "D4",
          "midi": 62,
          "hz": 293.66
        }
      ],
      "relativeToStandard": "Every string down a whole step, so the instrument reads as a guitar in D while keeping the exact interval structure of standard tuning.",
      "commonIn": [
        "stoner rock",
        "doom metal",
        "grunge"
      ]
    },
    {
      "id": "guitar-b-standard",
      "instrument": "guitar",
      "instrumentLabel": "6-string guitar",
      "tuningId": "b-standard",
      "tuningLabel": "B standard",
      "notation": "BEADF#B",
      "category": "lowered",
      "url": "https://tunestand.com/tuner/guitar/b-standard",
      "strings": [
        {
          "position": 6,
          "label": "6th (lowest)",
          "note": "B1",
          "midi": 35,
          "hz": 61.74
        },
        {
          "position": 5,
          "label": "5th",
          "note": "E2",
          "midi": 40,
          "hz": 82.41
        },
        {
          "position": 4,
          "label": "4th",
          "note": "A2",
          "midi": 45,
          "hz": 110
        },
        {
          "position": 3,
          "label": "3rd",
          "note": "D3",
          "midi": 50,
          "hz": 146.83
        },
        {
          "position": 2,
          "label": "2nd",
          "note": "F#3",
          "midi": 54,
          "hz": 185
        },
        {
          "position": 1,
          "label": "1st (highest)",
          "note": "B3",
          "midi": 59,
          "hz": 246.94
        }
      ],
      "relativeToStandard": "Standard tuning transposed down a perfect fourth. Every interval between strings is unchanged, including the major third between the 3rd and 2nd.",
      "commonIn": [
        "baritone guitar",
        "doom metal",
        "progressive metal"
      ]
    },
    {
      "id": "guitar-open-g",
      "instrument": "guitar",
      "instrumentLabel": "6-string guitar",
      "tuningId": "open-g",
      "tuningLabel": "Open G",
      "notation": "DGDGBD",
      "category": "open",
      "url": "https://tunestand.com/tuner/guitar/open-g",
      "strings": [
        {
          "position": 6,
          "label": "6th (lowest)",
          "note": "D2",
          "midi": 38,
          "hz": 73.42
        },
        {
          "position": 5,
          "label": "5th",
          "note": "G2",
          "midi": 43,
          "hz": 98
        },
        {
          "position": 4,
          "label": "4th",
          "note": "D3",
          "midi": 50,
          "hz": 146.83
        },
        {
          "position": 3,
          "label": "3rd",
          "note": "G3",
          "midi": 55,
          "hz": 196
        },
        {
          "position": 2,
          "label": "2nd",
          "note": "B3",
          "midi": 59,
          "hz": 246.94
        },
        {
          "position": 1,
          "label": "1st (highest)",
          "note": "D4",
          "midi": 62,
          "hz": 293.66
        }
      ],
      "relativeToStandard": "Lower the 6th, 5th and 1st strings a whole step each: E2 to D2, A2 to G2, E4 to D4. The middle three stay put.",
      "commonIn": [
        "blues",
        "slide guitar",
        "country blues",
        "rock"
      ]
    },
    {
      "id": "guitar-open-g-minor",
      "instrument": "guitar",
      "instrumentLabel": "6-string guitar",
      "tuningId": "open-g-minor",
      "tuningLabel": "Open G minor",
      "notation": "DGDGBbD",
      "category": "open",
      "url": "https://tunestand.com/tuner/guitar/open-g-minor",
      "strings": [
        {
          "position": 6,
          "label": "6th (lowest)",
          "note": "D2",
          "midi": 38,
          "hz": 73.42
        },
        {
          "position": 5,
          "label": "5th",
          "note": "G2",
          "midi": 43,
          "hz": 98
        },
        {
          "position": 4,
          "label": "4th",
          "note": "D3",
          "midi": 50,
          "hz": 146.83
        },
        {
          "position": 3,
          "label": "3rd",
          "note": "G3",
          "midi": 55,
          "hz": 196
        },
        {
          "position": 2,
          "label": "2nd",
          "note": "A#3",
          "midi": 58,
          "hz": 233.08
        },
        {
          "position": 1,
          "label": "1st (highest)",
          "note": "D4",
          "midi": 62,
          "hz": 293.66
        }
      ],
      "relativeToStandard": "Open G with the 2nd string lowered one more semitone, from B3 to Bb3, turning the open major third into a minor third.",
      "commonIn": [
        "country blues",
        "slide guitar in minor keys"
      ]
    },
    {
      "id": "guitar-open-d",
      "instrument": "guitar",
      "instrumentLabel": "6-string guitar",
      "tuningId": "open-d",
      "tuningLabel": "Open D",
      "notation": "DADF#AD",
      "category": "open",
      "url": "https://tunestand.com/tuner/guitar/open-d",
      "strings": [
        {
          "position": 6,
          "label": "6th (lowest)",
          "note": "D2",
          "midi": 38,
          "hz": 73.42
        },
        {
          "position": 5,
          "label": "5th",
          "note": "A2",
          "midi": 45,
          "hz": 110
        },
        {
          "position": 4,
          "label": "4th",
          "note": "D3",
          "midi": 50,
          "hz": 146.83
        },
        {
          "position": 3,
          "label": "3rd",
          "note": "F#3",
          "midi": 54,
          "hz": 185
        },
        {
          "position": 2,
          "label": "2nd",
          "note": "A3",
          "midi": 57,
          "hz": 220
        },
        {
          "position": 1,
          "label": "1st (highest)",
          "note": "D4",
          "midi": 62,
          "hz": 293.66
        }
      ],
      "relativeToStandard": "Lower the 6th, 2nd and 1st strings a whole step and the 3rd string a semitone: E2 to D2, B3 to A3, E4 to D4, G3 to F#3.",
      "commonIn": [
        "folk",
        "blues",
        "slide guitar",
        "fingerstyle"
      ]
    },
    {
      "id": "guitar-open-d-minor",
      "instrument": "guitar",
      "instrumentLabel": "6-string guitar",
      "tuningId": "open-d-minor",
      "tuningLabel": "Open D minor",
      "notation": "DADFAD",
      "category": "open",
      "url": "https://tunestand.com/tuner/guitar/open-d-minor",
      "strings": [
        {
          "position": 6,
          "label": "6th (lowest)",
          "note": "D2",
          "midi": 38,
          "hz": 73.42
        },
        {
          "position": 5,
          "label": "5th",
          "note": "A2",
          "midi": 45,
          "hz": 110
        },
        {
          "position": 4,
          "label": "4th",
          "note": "D3",
          "midi": 50,
          "hz": 146.83
        },
        {
          "position": 3,
          "label": "3rd",
          "note": "F3",
          "midi": 53,
          "hz": 174.61
        },
        {
          "position": 2,
          "label": "2nd",
          "note": "A3",
          "midi": 57,
          "hz": 220
        },
        {
          "position": 1,
          "label": "1st (highest)",
          "note": "D4",
          "midi": 62,
          "hz": 293.66
        }
      ],
      "relativeToStandard": "Open D with the 3rd string lowered one more semitone, from F#3 to F3, which flattens the third of the chord.",
      "commonIn": [
        "folk",
        "fingerstyle",
        "modal and drone playing"
      ]
    },
    {
      "id": "guitar-open-e",
      "instrument": "guitar",
      "instrumentLabel": "6-string guitar",
      "tuningId": "open-e",
      "tuningLabel": "Open E",
      "notation": "EBEG#BE",
      "category": "open",
      "url": "https://tunestand.com/tuner/guitar/open-e",
      "strings": [
        {
          "position": 6,
          "label": "6th (lowest)",
          "note": "E2",
          "midi": 40,
          "hz": 82.41
        },
        {
          "position": 5,
          "label": "5th",
          "note": "B2",
          "midi": 47,
          "hz": 123.47
        },
        {
          "position": 4,
          "label": "4th",
          "note": "E3",
          "midi": 52,
          "hz": 164.81
        },
        {
          "position": 3,
          "label": "3rd",
          "note": "G#3",
          "midi": 56,
          "hz": 207.65
        },
        {
          "position": 2,
          "label": "2nd",
          "note": "B3",
          "midi": 59,
          "hz": 246.94
        },
        {
          "position": 1,
          "label": "1st (highest)",
          "note": "E4",
          "midi": 64,
          "hz": 329.63
        }
      ],
      "relativeToStandard": "Raise the 5th, 4th and 3rd strings: A2 to B2, D3 to E3, G3 to G#3. The 6th, 2nd and 1st stay where they are.",
      "commonIn": [
        "blues",
        "slide guitar",
        "rock"
      ]
    },
    {
      "id": "guitar-open-e-minor",
      "instrument": "guitar",
      "instrumentLabel": "6-string guitar",
      "tuningId": "open-e-minor",
      "tuningLabel": "Open E minor",
      "notation": "EBEGBE",
      "category": "open",
      "url": "https://tunestand.com/tuner/guitar/open-e-minor",
      "strings": [
        {
          "position": 6,
          "label": "6th (lowest)",
          "note": "E2",
          "midi": 40,
          "hz": 82.41
        },
        {
          "position": 5,
          "label": "5th",
          "note": "B2",
          "midi": 47,
          "hz": 123.47
        },
        {
          "position": 4,
          "label": "4th",
          "note": "E3",
          "midi": 52,
          "hz": 164.81
        },
        {
          "position": 3,
          "label": "3rd",
          "note": "G3",
          "midi": 55,
          "hz": 196
        },
        {
          "position": 2,
          "label": "2nd",
          "note": "B3",
          "midi": 59,
          "hz": 246.94
        },
        {
          "position": 1,
          "label": "1st (highest)",
          "note": "E4",
          "midi": 64,
          "hz": 329.63
        }
      ],
      "relativeToStandard": "Raise the 5th and 4th strings a whole step, from A2 to B2 and D3 to E3, and leave everything else at standard pitch.",
      "commonIn": [
        "folk",
        "fingerstyle",
        "slide guitar in minor keys"
      ]
    },
    {
      "id": "guitar-open-c",
      "instrument": "guitar",
      "instrumentLabel": "6-string guitar",
      "tuningId": "open-c",
      "tuningLabel": "Open C",
      "notation": "CGCGCE",
      "category": "open",
      "url": "https://tunestand.com/tuner/guitar/open-c",
      "strings": [
        {
          "position": 6,
          "label": "6th (lowest)",
          "note": "C2",
          "midi": 36,
          "hz": 65.41
        },
        {
          "position": 5,
          "label": "5th",
          "note": "G2",
          "midi": 43,
          "hz": 98
        },
        {
          "position": 4,
          "label": "4th",
          "note": "C3",
          "midi": 48,
          "hz": 130.81
        },
        {
          "position": 3,
          "label": "3rd",
          "note": "G3",
          "midi": 55,
          "hz": 196
        },
        {
          "position": 2,
          "label": "2nd",
          "note": "C4",
          "midi": 60,
          "hz": 261.63
        },
        {
          "position": 1,
          "label": "1st (highest)",
          "note": "E4",
          "midi": 64,
          "hz": 329.63
        }
      ],
      "relativeToStandard": "Lower the 6th two whole steps to C2, the 5th a whole step to G2, the 4th a whole step to C3, raise the 2nd a semitone to C4, and lower the 1st a whole step to E4. Only the 3rd string keeps its standard G3.",
      "commonIn": [
        "fingerstyle",
        "folk",
        "acoustic instrumental"
      ]
    },
    {
      "id": "guitar-open-a",
      "instrument": "guitar",
      "instrumentLabel": "6-string guitar",
      "tuningId": "open-a",
      "tuningLabel": "Open A",
      "notation": "EAEAC#E",
      "category": "open",
      "url": "https://tunestand.com/tuner/guitar/open-a",
      "strings": [
        {
          "position": 6,
          "label": "6th (lowest)",
          "note": "E2",
          "midi": 40,
          "hz": 82.41
        },
        {
          "position": 5,
          "label": "5th",
          "note": "A2",
          "midi": 45,
          "hz": 110
        },
        {
          "position": 4,
          "label": "4th",
          "note": "E3",
          "midi": 52,
          "hz": 164.81
        },
        {
          "position": 3,
          "label": "3rd",
          "note": "A3",
          "midi": 57,
          "hz": 220
        },
        {
          "position": 2,
          "label": "2nd",
          "note": "C#4",
          "midi": 61,
          "hz": 277.18
        },
        {
          "position": 1,
          "label": "1st (highest)",
          "note": "E4",
          "midi": 64,
          "hz": 329.63
        }
      ],
      "relativeToStandard": "Raise the 4th a whole step to E3, the 3rd a whole step to A3 and the 2nd a whole step to C#4. The 6th, 5th and 1st are unchanged.",
      "commonIn": [
        "blues",
        "slide guitar"
      ]
    },
    {
      "id": "guitar-dadgad",
      "instrument": "guitar",
      "instrumentLabel": "6-string guitar",
      "tuningId": "dadgad",
      "tuningLabel": "DADGAD",
      "notation": "DADGAD",
      "category": "modal",
      "url": "https://tunestand.com/tuner/guitar/dadgad",
      "strings": [
        {
          "position": 6,
          "label": "6th (lowest)",
          "note": "D2",
          "midi": 38,
          "hz": 73.42
        },
        {
          "position": 5,
          "label": "5th",
          "note": "A2",
          "midi": 45,
          "hz": 110
        },
        {
          "position": 4,
          "label": "4th",
          "note": "D3",
          "midi": 50,
          "hz": 146.83
        },
        {
          "position": 3,
          "label": "3rd",
          "note": "G3",
          "midi": 55,
          "hz": 196
        },
        {
          "position": 2,
          "label": "2nd",
          "note": "A3",
          "midi": 57,
          "hz": 220
        },
        {
          "position": 1,
          "label": "1st (highest)",
          "note": "D4",
          "midi": 62,
          "hz": 293.66
        }
      ],
      "relativeToStandard": "Lower the 6th, 2nd and 1st strings a whole step from standard: E2 to D2, B3 to A3, E4 to D4.",
      "commonIn": [
        "Celtic and Irish traditional",
        "folk",
        "fingerstyle",
        "modal playing"
      ]
    },
    {
      "id": "guitar-double-drop-d",
      "instrument": "guitar",
      "instrumentLabel": "6-string guitar",
      "tuningId": "double-drop-d",
      "tuningLabel": "Double drop D",
      "notation": "DADGBD",
      "category": "drop",
      "url": "https://tunestand.com/tuner/guitar/double-drop-d",
      "strings": [
        {
          "position": 6,
          "label": "6th (lowest)",
          "note": "D2",
          "midi": 38,
          "hz": 73.42
        },
        {
          "position": 5,
          "label": "5th",
          "note": "A2",
          "midi": 45,
          "hz": 110
        },
        {
          "position": 4,
          "label": "4th",
          "note": "D3",
          "midi": 50,
          "hz": 146.83
        },
        {
          "position": 3,
          "label": "3rd",
          "note": "G3",
          "midi": 55,
          "hz": 196
        },
        {
          "position": 2,
          "label": "2nd",
          "note": "B3",
          "midi": 59,
          "hz": 246.94
        },
        {
          "position": 1,
          "label": "1st (highest)",
          "note": "D4",
          "midi": 62,
          "hz": 293.66
        }
      ],
      "relativeToStandard": "Lower both the 6th and the 1st string a whole step, E2 to D2 and E4 to D4, and leave the middle four alone.",
      "commonIn": [
        "folk rock",
        "country rock",
        "fingerstyle"
      ]
    },
    {
      "id": "guitar-all-fourths",
      "instrument": "guitar",
      "instrumentLabel": "6-string guitar",
      "tuningId": "all-fourths",
      "tuningLabel": "All fourths",
      "notation": "EADGCF",
      "category": "regular",
      "url": "https://tunestand.com/tuner/guitar/all-fourths",
      "strings": [
        {
          "position": 6,
          "label": "6th (lowest)",
          "note": "E2",
          "midi": 40,
          "hz": 82.41
        },
        {
          "position": 5,
          "label": "5th",
          "note": "A2",
          "midi": 45,
          "hz": 110
        },
        {
          "position": 4,
          "label": "4th",
          "note": "D3",
          "midi": 50,
          "hz": 146.83
        },
        {
          "position": 3,
          "label": "3rd",
          "note": "G3",
          "midi": 55,
          "hz": 196
        },
        {
          "position": 2,
          "label": "2nd",
          "note": "C4",
          "midi": 60,
          "hz": 261.63
        },
        {
          "position": 1,
          "label": "1st (highest)",
          "note": "F4",
          "midi": 65,
          "hz": 349.23
        }
      ],
      "relativeToStandard": "Raise the 2nd string a semitone to C4 and the 1st a semitone to F4. The bottom four strings are already a fourth apart in standard tuning and do not move.",
      "commonIn": [
        "jazz",
        "practice and theory work",
        "players crossing over from bass"
      ]
    },
    {
      "id": "guitar-new-standard-tuning",
      "instrument": "guitar",
      "instrumentLabel": "6-string guitar",
      "tuningId": "new-standard-tuning",
      "tuningLabel": "New standard tuning",
      "notation": "CGDAEG",
      "category": "regular",
      "url": "https://tunestand.com/tuner/guitar/new-standard-tuning",
      "strings": [
        {
          "position": 6,
          "label": "6th (lowest)",
          "note": "C2",
          "midi": 36,
          "hz": 65.41
        },
        {
          "position": 5,
          "label": "5th",
          "note": "G2",
          "midi": 43,
          "hz": 98
        },
        {
          "position": 4,
          "label": "4th",
          "note": "D3",
          "midi": 50,
          "hz": 146.83
        },
        {
          "position": 3,
          "label": "3rd",
          "note": "A3",
          "midi": 57,
          "hz": 220
        },
        {
          "position": 2,
          "label": "2nd",
          "note": "E4",
          "midi": 64,
          "hz": 329.63
        },
        {
          "position": 1,
          "label": "1st (highest)",
          "note": "G4",
          "midi": 67,
          "hz": 392
        }
      ],
      "relativeToStandard": "Almost nothing survives from standard: five of the six strings are retuned, and the bottom five sit a perfect fifth apart like a cello, with a minor third to the top string.",
      "commonIn": [
        "contemporary and experimental guitar",
        "Guitar Craft repertoire"
      ]
    },
    {
      "id": "guitar-7-string-standard",
      "instrument": "guitar-7-string",
      "instrumentLabel": "7-string guitar",
      "tuningId": "standard",
      "tuningLabel": "Standard",
      "notation": "BEADGBE",
      "category": "standard",
      "url": "https://tunestand.com/tuner/guitar-7-string",
      "strings": [
        {
          "position": 7,
          "label": "7th (lowest)",
          "note": "B1",
          "midi": 35,
          "hz": 61.74
        },
        {
          "position": 6,
          "label": "6th",
          "note": "E2",
          "midi": 40,
          "hz": 82.41
        },
        {
          "position": 5,
          "label": "5th",
          "note": "A2",
          "midi": 45,
          "hz": 110
        },
        {
          "position": 4,
          "label": "4th",
          "note": "D3",
          "midi": 50,
          "hz": 146.83
        },
        {
          "position": 3,
          "label": "3rd",
          "note": "G3",
          "midi": 55,
          "hz": 196
        },
        {
          "position": 2,
          "label": "2nd",
          "note": "B3",
          "midi": 59,
          "hz": 246.94
        },
        {
          "position": 1,
          "label": "1st (highest)",
          "note": "E4",
          "midi": 64,
          "hz": 329.63
        }
      ],
      "relativeToStandard": "The reference tuning for a 7-string: a standard 6-string with one extra string a perfect fourth below the low E.",
      "commonIn": [
        "metal",
        "progressive rock",
        "jazz"
      ]
    },
    {
      "id": "guitar-7-string-drop-a",
      "instrument": "guitar-7-string",
      "instrumentLabel": "7-string guitar",
      "tuningId": "drop-a",
      "tuningLabel": "Drop A",
      "notation": "AEADGBE",
      "category": "drop",
      "url": "https://tunestand.com/tuner/guitar-7-string/drop-a",
      "strings": [
        {
          "position": 7,
          "label": "7th (lowest)",
          "note": "A1",
          "midi": 33,
          "hz": 55
        },
        {
          "position": 6,
          "label": "6th",
          "note": "E2",
          "midi": 40,
          "hz": 82.41
        },
        {
          "position": 5,
          "label": "5th",
          "note": "A2",
          "midi": 45,
          "hz": 110
        },
        {
          "position": 4,
          "label": "4th",
          "note": "D3",
          "midi": 50,
          "hz": 146.83
        },
        {
          "position": 3,
          "label": "3rd",
          "note": "G3",
          "midi": 55,
          "hz": 196
        },
        {
          "position": 2,
          "label": "2nd",
          "note": "B3",
          "midi": 59,
          "hz": 246.94
        },
        {
          "position": 1,
          "label": "1st (highest)",
          "note": "E4",
          "midi": 64,
          "hz": 329.63
        }
      ],
      "relativeToStandard": "Lower the 7th string one whole step, from B1 to A1. The other six keep 7-string standard tuning.",
      "commonIn": [
        "metal",
        "djent",
        "progressive metal"
      ]
    },
    {
      "id": "bass-standard",
      "instrument": "bass",
      "instrumentLabel": "4-string bass guitar",
      "tuningId": "standard",
      "tuningLabel": "Standard",
      "notation": "EADG",
      "category": "standard",
      "url": "https://tunestand.com/tuner/bass",
      "strings": [
        {
          "position": 4,
          "label": "4th (lowest)",
          "note": "E1",
          "midi": 28,
          "hz": 41.2
        },
        {
          "position": 3,
          "label": "3rd",
          "note": "A1",
          "midi": 33,
          "hz": 55
        },
        {
          "position": 2,
          "label": "2nd",
          "note": "D2",
          "midi": 38,
          "hz": 73.42
        },
        {
          "position": 1,
          "label": "1st (highest)",
          "note": "G2",
          "midi": 43,
          "hz": 98
        }
      ],
      "relativeToStandard": "The reference tuning for a 4-string bass: the same letter names as the bottom four guitar strings, one octave lower.",
      "commonIn": [
        "almost all bass repertoire"
      ]
    },
    {
      "id": "bass-drop-d",
      "instrument": "bass",
      "instrumentLabel": "4-string bass guitar",
      "tuningId": "drop-d",
      "tuningLabel": "Drop D",
      "notation": "DADG",
      "category": "drop",
      "url": "https://tunestand.com/tuner/bass/drop-d",
      "strings": [
        {
          "position": 4,
          "label": "4th (lowest)",
          "note": "D1",
          "midi": 26,
          "hz": 36.71
        },
        {
          "position": 3,
          "label": "3rd",
          "note": "A1",
          "midi": 33,
          "hz": 55
        },
        {
          "position": 2,
          "label": "2nd",
          "note": "D2",
          "midi": 38,
          "hz": 73.42
        },
        {
          "position": 1,
          "label": "1st (highest)",
          "note": "G2",
          "midi": 43,
          "hz": 98
        }
      ],
      "relativeToStandard": "Lower the 4th string a whole step, from E1 to D1. The other three do not move.",
      "commonIn": [
        "rock",
        "metal",
        "punk"
      ]
    },
    {
      "id": "bass-half-step-down",
      "instrument": "bass",
      "instrumentLabel": "4-string bass guitar",
      "tuningId": "half-step-down",
      "tuningLabel": "Half step down",
      "notation": "EbAbDbGb",
      "category": "lowered",
      "url": "https://tunestand.com/tuner/bass/half-step-down",
      "strings": [
        {
          "position": 4,
          "label": "4th (lowest)",
          "note": "D#1",
          "midi": 27,
          "hz": 38.89
        },
        {
          "position": 3,
          "label": "3rd",
          "note": "G#1",
          "midi": 32,
          "hz": 51.91
        },
        {
          "position": 2,
          "label": "2nd",
          "note": "C#2",
          "midi": 37,
          "hz": 69.3
        },
        {
          "position": 1,
          "label": "1st (highest)",
          "note": "F#2",
          "midi": 42,
          "hz": 92.5
        }
      ],
      "relativeToStandard": "All four strings down one semitone. Intervals are unchanged, so every fingering stays exactly the same.",
      "commonIn": [
        "rock",
        "blues",
        "metal"
      ]
    },
    {
      "id": "bass-drop-c",
      "instrument": "bass",
      "instrumentLabel": "4-string bass guitar",
      "tuningId": "drop-c",
      "tuningLabel": "Drop C",
      "notation": "CGCF",
      "category": "drop",
      "url": "https://tunestand.com/tuner/bass/drop-c",
      "strings": [
        {
          "position": 4,
          "label": "4th (lowest)",
          "note": "C1",
          "midi": 24,
          "hz": 32.7
        },
        {
          "position": 3,
          "label": "3rd",
          "note": "G1",
          "midi": 31,
          "hz": 49
        },
        {
          "position": 2,
          "label": "2nd",
          "note": "C2",
          "midi": 36,
          "hz": 65.41
        },
        {
          "position": 1,
          "label": "1st (highest)",
          "note": "F2",
          "midi": 41,
          "hz": 87.31
        }
      ],
      "relativeToStandard": "Drop D with everything lowered another whole step: the 4th string sits on C1 and the other three drop a whole step each.",
      "commonIn": [
        "metalcore",
        "modern metal"
      ]
    },
    {
      "id": "bass-5-string-standard",
      "instrument": "bass-5-string",
      "instrumentLabel": "5-string bass guitar",
      "tuningId": "standard",
      "tuningLabel": "Standard",
      "notation": "BEADG",
      "category": "standard",
      "url": "https://tunestand.com/tuner/bass-5-string",
      "strings": [
        {
          "position": 5,
          "label": "5th (lowest)",
          "note": "B0",
          "midi": 23,
          "hz": 30.87
        },
        {
          "position": 4,
          "label": "4th",
          "note": "E1",
          "midi": 28,
          "hz": 41.2
        },
        {
          "position": 3,
          "label": "3rd",
          "note": "A1",
          "midi": 33,
          "hz": 55
        },
        {
          "position": 2,
          "label": "2nd",
          "note": "D2",
          "midi": 38,
          "hz": 73.42
        },
        {
          "position": 1,
          "label": "1st (highest)",
          "note": "G2",
          "midi": 43,
          "hz": 98
        }
      ],
      "relativeToStandard": "A standard 4-string bass with an extra string a perfect fourth below the low E.",
      "commonIn": [
        "metal",
        "gospel",
        "session and modern pop playing"
      ]
    },
    {
      "id": "bass-5-string-tenor",
      "instrument": "bass-5-string",
      "instrumentLabel": "5-string bass guitar",
      "tuningId": "tenor",
      "tuningLabel": "Tenor (high C)",
      "notation": "EADGC",
      "category": "raised",
      "url": "https://tunestand.com/tuner/bass-5-string/tenor",
      "strings": [
        {
          "position": 5,
          "label": "5th (lowest)",
          "note": "E1",
          "midi": 28,
          "hz": 41.2
        },
        {
          "position": 4,
          "label": "4th",
          "note": "A1",
          "midi": 33,
          "hz": 55
        },
        {
          "position": 3,
          "label": "3rd",
          "note": "D2",
          "midi": 38,
          "hz": 73.42
        },
        {
          "position": 2,
          "label": "2nd",
          "note": "G2",
          "midi": 43,
          "hz": 98
        },
        {
          "position": 1,
          "label": "1st (highest)",
          "note": "C3",
          "midi": 48,
          "hz": 130.81
        }
      ],
      "relativeToStandard": "Instead of adding a string below the low E, add one a perfect fourth above the G. The bottom four match a standard 4-string exactly.",
      "commonIn": [
        "jazz",
        "fusion",
        "solo bass"
      ]
    },
    {
      "id": "ukulele-standard",
      "instrument": "ukulele",
      "instrumentLabel": "Soprano, concert or tenor ukulele",
      "tuningId": "standard",
      "tuningLabel": "Standard reentrant",
      "notation": "GCEA",
      "category": "standard",
      "url": "https://tunestand.com/tuner/ukulele",
      "strings": [
        {
          "position": 4,
          "label": "4th",
          "note": "G4",
          "midi": 67,
          "hz": 392
        },
        {
          "position": 3,
          "label": "3rd",
          "note": "C4",
          "midi": 60,
          "hz": 261.63
        },
        {
          "position": 2,
          "label": "2nd",
          "note": "E4",
          "midi": 64,
          "hz": 329.63
        },
        {
          "position": 1,
          "label": "1st",
          "note": "A4",
          "midi": 69,
          "hz": 440
        }
      ],
      "relativeToStandard": "The reference tuning for a ukulele, and it is reentrant: the 4th string is tuned above the 3rd rather than below it.",
      "commonIn": [
        "almost all ukulele repertoire"
      ]
    },
    {
      "id": "ukulele-low-g",
      "instrument": "ukulele",
      "instrumentLabel": "Soprano, concert or tenor ukulele",
      "tuningId": "low-g",
      "tuningLabel": "Low G",
      "notation": "GCEA (linear)",
      "category": "lowered",
      "url": "https://tunestand.com/tuner/ukulele/low-g",
      "strings": [
        {
          "position": 4,
          "label": "4th",
          "note": "G3",
          "midi": 55,
          "hz": 196
        },
        {
          "position": 3,
          "label": "3rd",
          "note": "C4",
          "midi": 60,
          "hz": 261.63
        },
        {
          "position": 2,
          "label": "2nd",
          "note": "E4",
          "midi": 64,
          "hz": 329.63
        },
        {
          "position": 1,
          "label": "1st",
          "note": "A4",
          "midi": 69,
          "hz": 440
        }
      ],
      "relativeToStandard": "Replace the 4th string with a heavier one tuned an octave lower, G3 instead of G4. The other three strings are unchanged.",
      "commonIn": [
        "fingerstyle",
        "solo ukulele",
        "jazz"
      ]
    },
    {
      "id": "ukulele-d-tuning",
      "instrument": "ukulele",
      "instrumentLabel": "Soprano ukulele",
      "tuningId": "d-tuning",
      "tuningLabel": "D tuning",
      "notation": "ADF#B",
      "category": "raised",
      "url": "https://tunestand.com/tuner/ukulele/d-tuning",
      "strings": [
        {
          "position": 4,
          "label": "4th",
          "note": "A4",
          "midi": 69,
          "hz": 440
        },
        {
          "position": 3,
          "label": "3rd",
          "note": "D4",
          "midi": 62,
          "hz": 293.66
        },
        {
          "position": 2,
          "label": "2nd",
          "note": "F#4",
          "midi": 66,
          "hz": 369.99
        },
        {
          "position": 1,
          "label": "1st",
          "note": "B4",
          "midi": 71,
          "hz": 493.88
        }
      ],
      "relativeToStandard": "Every string up a whole step from standard GCEA, keeping the reentrant layout.",
      "commonIn": [
        "early 20th century ukulele repertoire",
        "soprano ukulele"
      ]
    },
    {
      "id": "ukulele-baritone-standard",
      "instrument": "ukulele-baritone",
      "instrumentLabel": "Baritone ukulele",
      "tuningId": "standard",
      "tuningLabel": "Standard",
      "notation": "DGBE",
      "category": "standard",
      "url": "https://tunestand.com/tuner/ukulele-baritone",
      "strings": [
        {
          "position": 4,
          "label": "4th",
          "note": "D3",
          "midi": 50,
          "hz": 146.83
        },
        {
          "position": 3,
          "label": "3rd",
          "note": "G3",
          "midi": 55,
          "hz": 196
        },
        {
          "position": 2,
          "label": "2nd",
          "note": "B3",
          "midi": 59,
          "hz": 246.94
        },
        {
          "position": 1,
          "label": "1st",
          "note": "E4",
          "midi": 64,
          "hz": 329.63
        }
      ],
      "relativeToStandard": "The reference tuning for a baritone ukulele. Unlike the smaller sizes it is not reentrant: the strings run low to high.",
      "commonIn": [
        "folk",
        "accompaniment",
        "guitarists playing ukulele"
      ]
    },
    {
      "id": "banjo-open-g",
      "instrument": "banjo",
      "instrumentLabel": "5-string banjo",
      "tuningId": "open-g",
      "tuningLabel": "Open G",
      "notation": "gDGBD",
      "category": "standard",
      "url": "https://tunestand.com/tuner/banjo/open-g",
      "strings": [
        {
          "position": 5,
          "label": "5th (short drone)",
          "note": "G4",
          "midi": 67,
          "hz": 392
        },
        {
          "position": 4,
          "label": "4th",
          "note": "D3",
          "midi": 50,
          "hz": 146.83
        },
        {
          "position": 3,
          "label": "3rd",
          "note": "G3",
          "midi": 55,
          "hz": 196
        },
        {
          "position": 2,
          "label": "2nd",
          "note": "B3",
          "midi": 59,
          "hz": 246.94
        },
        {
          "position": 1,
          "label": "1st",
          "note": "D4",
          "midi": 62,
          "hz": 293.66
        }
      ],
      "relativeToStandard": "The reference tuning for a 5-string banjo. The lowercase g in gDGBD marks the short 5th string, which is the highest pitch on the instrument despite its number.",
      "commonIn": [
        "bluegrass",
        "clawhammer",
        "old-time"
      ]
    },
    {
      "id": "banjo-double-c",
      "instrument": "banjo",
      "instrumentLabel": "5-string banjo",
      "tuningId": "double-c",
      "tuningLabel": "Double C",
      "notation": "gCGCD",
      "category": "open",
      "url": "https://tunestand.com/tuner/banjo/double-c",
      "strings": [
        {
          "position": 5,
          "label": "5th (short drone)",
          "note": "G4",
          "midi": 67,
          "hz": 392
        },
        {
          "position": 4,
          "label": "4th",
          "note": "C3",
          "midi": 48,
          "hz": 130.81
        },
        {
          "position": 3,
          "label": "3rd",
          "note": "G3",
          "midi": 55,
          "hz": 196
        },
        {
          "position": 2,
          "label": "2nd",
          "note": "C4",
          "midi": 60,
          "hz": 261.63
        },
        {
          "position": 1,
          "label": "1st",
          "note": "D4",
          "midi": 62,
          "hz": 293.66
        }
      ],
      "relativeToStandard": "From open G, lower the 4th string a whole step from D3 to C3, and raise the 2nd string a semitone from B3 to C4.",
      "commonIn": [
        "old-time",
        "clawhammer"
      ]
    },
    {
      "id": "banjo-sawmill",
      "instrument": "banjo",
      "instrumentLabel": "5-string banjo",
      "tuningId": "sawmill",
      "tuningLabel": "Sawmill (mountain modal)",
      "notation": "gDGCD",
      "category": "modal",
      "url": "https://tunestand.com/tuner/banjo/sawmill",
      "strings": [
        {
          "position": 5,
          "label": "5th (short drone)",
          "note": "G4",
          "midi": 67,
          "hz": 392
        },
        {
          "position": 4,
          "label": "4th",
          "note": "D3",
          "midi": 50,
          "hz": 146.83
        },
        {
          "position": 3,
          "label": "3rd",
          "note": "G3",
          "midi": 55,
          "hz": 196
        },
        {
          "position": 2,
          "label": "2nd",
          "note": "C4",
          "midi": 60,
          "hz": 261.63
        },
        {
          "position": 1,
          "label": "1st",
          "note": "D4",
          "midi": 62,
          "hz": 293.66
        }
      ],
      "relativeToStandard": "Open G with the 2nd string raised a semitone, from B3 to C4.",
      "commonIn": [
        "old-time",
        "modal fiddle tunes",
        "clawhammer"
      ]
    },
    {
      "id": "banjo-open-d",
      "instrument": "banjo",
      "instrumentLabel": "5-string banjo",
      "tuningId": "open-d",
      "tuningLabel": "Open D",
      "notation": "f#DF#AD",
      "category": "open",
      "url": "https://tunestand.com/tuner/banjo/open-d",
      "strings": [
        {
          "position": 5,
          "label": "5th (short drone)",
          "note": "F#4",
          "midi": 66,
          "hz": 369.99
        },
        {
          "position": 4,
          "label": "4th",
          "note": "D3",
          "midi": 50,
          "hz": 146.83
        },
        {
          "position": 3,
          "label": "3rd",
          "note": "F#3",
          "midi": 54,
          "hz": 185
        },
        {
          "position": 2,
          "label": "2nd",
          "note": "A3",
          "midi": 57,
          "hz": 220
        },
        {
          "position": 1,
          "label": "1st",
          "note": "D4",
          "midi": 62,
          "hz": 293.66
        }
      ],
      "relativeToStandard": "From open G, lower the 5th string a semitone to F#4, the 3rd string a semitone to F#3 and the 2nd string a semitone to A3. The 4th and 1st strings keep D.",
      "commonIn": [
        "old-time",
        "clawhammer",
        "fiddle tune accompaniment"
      ]
    },
    {
      "id": "violin-standard",
      "instrument": "violin",
      "instrumentLabel": "Violin",
      "tuningId": "standard",
      "tuningLabel": "Standard",
      "notation": "GDAE",
      "category": "standard",
      "url": "https://tunestand.com/tuner/violin",
      "strings": [
        {
          "position": 4,
          "label": "4th (lowest)",
          "note": "G3",
          "midi": 55,
          "hz": 196
        },
        {
          "position": 3,
          "label": "3rd",
          "note": "D4",
          "midi": 62,
          "hz": 293.66
        },
        {
          "position": 2,
          "label": "2nd",
          "note": "A4",
          "midi": 69,
          "hz": 440
        },
        {
          "position": 1,
          "label": "1st (highest)",
          "note": "E5",
          "midi": 76,
          "hz": 659.26
        }
      ],
      "relativeToStandard": "The reference tuning for a violin: four strings, each a perfect fifth above the one below.",
      "commonIn": [
        "classical",
        "folk",
        "fiddle traditions"
      ]
    },
    {
      "id": "violin-cross-tuning-aeae",
      "instrument": "violin",
      "instrumentLabel": "Violin",
      "tuningId": "cross-tuning-aeae",
      "tuningLabel": "Cross tuning AEAE",
      "notation": "AEAE",
      "category": "open",
      "url": "https://tunestand.com/tuner/violin/cross-tuning-aeae",
      "strings": [
        {
          "position": 4,
          "label": "4th (lowest)",
          "note": "A3",
          "midi": 57,
          "hz": 220
        },
        {
          "position": 3,
          "label": "3rd",
          "note": "E4",
          "midi": 64,
          "hz": 329.63
        },
        {
          "position": 2,
          "label": "2nd",
          "note": "A4",
          "midi": 69,
          "hz": 440
        },
        {
          "position": 1,
          "label": "1st (highest)",
          "note": "E5",
          "midi": 76,
          "hz": 659.26
        }
      ],
      "relativeToStandard": "Raise the G string a whole step to A3 and the D string a whole step to E4. The A and E strings stay at standard pitch.",
      "commonIn": [
        "old-time fiddle",
        "Appalachian traditional"
      ]
    },
    {
      "id": "viola-standard",
      "instrument": "viola",
      "instrumentLabel": "Viola",
      "tuningId": "standard",
      "tuningLabel": "Standard",
      "notation": "CGDA",
      "category": "standard",
      "url": "https://tunestand.com/tuner/viola",
      "strings": [
        {
          "position": 4,
          "label": "4th (lowest)",
          "note": "C3",
          "midi": 48,
          "hz": 130.81
        },
        {
          "position": 3,
          "label": "3rd",
          "note": "G3",
          "midi": 55,
          "hz": 196
        },
        {
          "position": 2,
          "label": "2nd",
          "note": "D4",
          "midi": 62,
          "hz": 293.66
        },
        {
          "position": 1,
          "label": "1st (highest)",
          "note": "A4",
          "midi": 69,
          "hz": 440
        }
      ],
      "relativeToStandard": "The reference tuning for a viola: a perfect fifth below a violin, so its top three strings match a violin's bottom three.",
      "commonIn": [
        "classical",
        "chamber music"
      ]
    },
    {
      "id": "cello-standard",
      "instrument": "cello",
      "instrumentLabel": "Cello",
      "tuningId": "standard",
      "tuningLabel": "Standard",
      "notation": "CGDA",
      "category": "standard",
      "url": "https://tunestand.com/tuner/cello",
      "strings": [
        {
          "position": 4,
          "label": "4th (lowest)",
          "note": "C2",
          "midi": 36,
          "hz": 65.41
        },
        {
          "position": 3,
          "label": "3rd",
          "note": "G2",
          "midi": 43,
          "hz": 98
        },
        {
          "position": 2,
          "label": "2nd",
          "note": "D3",
          "midi": 50,
          "hz": 146.83
        },
        {
          "position": 1,
          "label": "1st (highest)",
          "note": "A3",
          "midi": 57,
          "hz": 220
        }
      ],
      "relativeToStandard": "The reference tuning for a cello: the same letter names as a viola, one full octave lower.",
      "commonIn": [
        "classical",
        "chamber music",
        "contemporary and crossover playing"
      ]
    },
    {
      "id": "double-bass-standard",
      "instrument": "double-bass",
      "instrumentLabel": "Double bass",
      "tuningId": "standard",
      "tuningLabel": "Standard (orchestral)",
      "notation": "EADG",
      "category": "standard",
      "url": "https://tunestand.com/tuner/double-bass",
      "strings": [
        {
          "position": 4,
          "label": "4th (lowest)",
          "note": "E1",
          "midi": 28,
          "hz": 41.2
        },
        {
          "position": 3,
          "label": "3rd",
          "note": "A1",
          "midi": 33,
          "hz": 55
        },
        {
          "position": 2,
          "label": "2nd",
          "note": "D2",
          "midi": 38,
          "hz": 73.42
        },
        {
          "position": 1,
          "label": "1st (highest)",
          "note": "G2",
          "midi": 43,
          "hz": 98
        }
      ],
      "relativeToStandard": "The reference tuning for a double bass, and the one member of the string family tuned in fourths rather than fifths.",
      "commonIn": [
        "orchestral",
        "jazz",
        "rockabilly"
      ]
    },
    {
      "id": "double-bass-solo",
      "instrument": "double-bass",
      "instrumentLabel": "Double bass",
      "tuningId": "solo",
      "tuningLabel": "Solo tuning",
      "notation": "F#BEA",
      "category": "raised",
      "url": "https://tunestand.com/tuner/double-bass/solo",
      "strings": [
        {
          "position": 4,
          "label": "4th (lowest)",
          "note": "F#1",
          "midi": 30,
          "hz": 46.25
        },
        {
          "position": 3,
          "label": "3rd",
          "note": "B1",
          "midi": 35,
          "hz": 61.74
        },
        {
          "position": 2,
          "label": "2nd",
          "note": "E2",
          "midi": 40,
          "hz": 82.41
        },
        {
          "position": 1,
          "label": "1st (highest)",
          "note": "A2",
          "midi": 45,
          "hz": 110
        }
      ],
      "relativeToStandard": "Every string up a whole step from orchestral tuning, using a dedicated lighter string set.",
      "commonIn": [
        "solo classical repertoire"
      ]
    },
    {
      "id": "mandolin-standard",
      "instrument": "mandolin",
      "instrumentLabel": "Mandolin",
      "tuningId": "standard",
      "tuningLabel": "Standard",
      "notation": "GDAE",
      "category": "standard",
      "url": "https://tunestand.com/tuner/mandolin",
      "strings": [
        {
          "position": 4,
          "label": "4th course",
          "note": "G3",
          "midi": 55,
          "hz": 196
        },
        {
          "position": 3,
          "label": "3rd course",
          "note": "D4",
          "midi": 62,
          "hz": 293.66
        },
        {
          "position": 2,
          "label": "2nd course",
          "note": "A4",
          "midi": 69,
          "hz": 440
        },
        {
          "position": 1,
          "label": "1st course",
          "note": "E5",
          "midi": 76,
          "hz": 659.26
        }
      ],
      "relativeToStandard": "The reference tuning for a mandolin: the same four pitches as a violin, with each note doubled across a pair of strings called a course.",
      "commonIn": [
        "bluegrass",
        "folk",
        "classical mandolin"
      ]
    },
    {
      "id": "mandolin-cross-tuning-gdad",
      "instrument": "mandolin",
      "instrumentLabel": "Mandolin",
      "tuningId": "cross-tuning-gdad",
      "tuningLabel": "Cross tuning GDAD",
      "notation": "GDAD",
      "category": "modal",
      "url": "https://tunestand.com/tuner/mandolin/cross-tuning-gdad",
      "strings": [
        {
          "position": 4,
          "label": "4th course",
          "note": "G3",
          "midi": 55,
          "hz": 196
        },
        {
          "position": 3,
          "label": "3rd course",
          "note": "D4",
          "midi": 62,
          "hz": 293.66
        },
        {
          "position": 2,
          "label": "2nd course",
          "note": "A4",
          "midi": 69,
          "hz": 440
        },
        {
          "position": 1,
          "label": "1st course",
          "note": "D5",
          "midi": 74,
          "hz": 587.33
        }
      ],
      "relativeToStandard": "Lower the 1st course a whole step, from E5 to D5. The other three courses stay at standard pitch.",
      "commonIn": [
        "old-time",
        "Irish traditional",
        "modal tunes in D"
      ]
    }
  ]
}