{
  "name": "TuneStand note frequency 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": "f = 440 * 2^((m - 69) / 12), twelve tone equal temperament, A4 = 440 Hz, scientific pitch notation where middle C is C4 and MIDI 60.",
  "reference": {
    "a4": 440,
    "temperament": "equal"
  },
  "count": 108,
  "notes": [
    {
      "note": "C0",
      "flat": "C0",
      "midi": 12,
      "octave": 0,
      "pianoKey": null,
      "hz": 16.35,
      "url": "https://tunestand.com/note/c0"
    },
    {
      "note": "C#0",
      "flat": "Db0",
      "midi": 13,
      "octave": 0,
      "pianoKey": null,
      "hz": 17.32,
      "url": "https://tunestand.com/note/c-sharp-0"
    },
    {
      "note": "D0",
      "flat": "D0",
      "midi": 14,
      "octave": 0,
      "pianoKey": null,
      "hz": 18.35,
      "url": "https://tunestand.com/note/d0"
    },
    {
      "note": "D#0",
      "flat": "Eb0",
      "midi": 15,
      "octave": 0,
      "pianoKey": null,
      "hz": 19.45,
      "url": "https://tunestand.com/note/d-sharp-0"
    },
    {
      "note": "E0",
      "flat": "E0",
      "midi": 16,
      "octave": 0,
      "pianoKey": null,
      "hz": 20.6,
      "url": "https://tunestand.com/note/e0"
    },
    {
      "note": "F0",
      "flat": "F0",
      "midi": 17,
      "octave": 0,
      "pianoKey": null,
      "hz": 21.83,
      "url": "https://tunestand.com/note/f0"
    },
    {
      "note": "F#0",
      "flat": "Gb0",
      "midi": 18,
      "octave": 0,
      "pianoKey": null,
      "hz": 23.12,
      "url": "https://tunestand.com/note/f-sharp-0"
    },
    {
      "note": "G0",
      "flat": "G0",
      "midi": 19,
      "octave": 0,
      "pianoKey": null,
      "hz": 24.5,
      "url": "https://tunestand.com/note/g0"
    },
    {
      "note": "G#0",
      "flat": "Ab0",
      "midi": 20,
      "octave": 0,
      "pianoKey": null,
      "hz": 25.96,
      "url": "https://tunestand.com/note/g-sharp-0"
    },
    {
      "note": "A0",
      "flat": "A0",
      "midi": 21,
      "octave": 0,
      "pianoKey": 1,
      "hz": 27.5,
      "url": "https://tunestand.com/note/a0"
    },
    {
      "note": "A#0",
      "flat": "Bb0",
      "midi": 22,
      "octave": 0,
      "pianoKey": 2,
      "hz": 29.14,
      "url": "https://tunestand.com/note/a-sharp-0"
    },
    {
      "note": "B0",
      "flat": "B0",
      "midi": 23,
      "octave": 0,
      "pianoKey": 3,
      "hz": 30.87,
      "url": "https://tunestand.com/note/b0"
    },
    {
      "note": "C1",
      "flat": "C1",
      "midi": 24,
      "octave": 1,
      "pianoKey": 4,
      "hz": 32.7,
      "url": "https://tunestand.com/note/c1"
    },
    {
      "note": "C#1",
      "flat": "Db1",
      "midi": 25,
      "octave": 1,
      "pianoKey": 5,
      "hz": 34.65,
      "url": "https://tunestand.com/note/c-sharp-1"
    },
    {
      "note": "D1",
      "flat": "D1",
      "midi": 26,
      "octave": 1,
      "pianoKey": 6,
      "hz": 36.71,
      "url": "https://tunestand.com/note/d1"
    },
    {
      "note": "D#1",
      "flat": "Eb1",
      "midi": 27,
      "octave": 1,
      "pianoKey": 7,
      "hz": 38.89,
      "url": "https://tunestand.com/note/d-sharp-1"
    },
    {
      "note": "E1",
      "flat": "E1",
      "midi": 28,
      "octave": 1,
      "pianoKey": 8,
      "hz": 41.2,
      "url": "https://tunestand.com/note/e1"
    },
    {
      "note": "F1",
      "flat": "F1",
      "midi": 29,
      "octave": 1,
      "pianoKey": 9,
      "hz": 43.65,
      "url": "https://tunestand.com/note/f1"
    },
    {
      "note": "F#1",
      "flat": "Gb1",
      "midi": 30,
      "octave": 1,
      "pianoKey": 10,
      "hz": 46.25,
      "url": "https://tunestand.com/note/f-sharp-1"
    },
    {
      "note": "G1",
      "flat": "G1",
      "midi": 31,
      "octave": 1,
      "pianoKey": 11,
      "hz": 49,
      "url": "https://tunestand.com/note/g1"
    },
    {
      "note": "G#1",
      "flat": "Ab1",
      "midi": 32,
      "octave": 1,
      "pianoKey": 12,
      "hz": 51.91,
      "url": "https://tunestand.com/note/g-sharp-1"
    },
    {
      "note": "A1",
      "flat": "A1",
      "midi": 33,
      "octave": 1,
      "pianoKey": 13,
      "hz": 55,
      "url": "https://tunestand.com/note/a1"
    },
    {
      "note": "A#1",
      "flat": "Bb1",
      "midi": 34,
      "octave": 1,
      "pianoKey": 14,
      "hz": 58.27,
      "url": "https://tunestand.com/note/a-sharp-1"
    },
    {
      "note": "B1",
      "flat": "B1",
      "midi": 35,
      "octave": 1,
      "pianoKey": 15,
      "hz": 61.74,
      "url": "https://tunestand.com/note/b1"
    },
    {
      "note": "C2",
      "flat": "C2",
      "midi": 36,
      "octave": 2,
      "pianoKey": 16,
      "hz": 65.41,
      "url": "https://tunestand.com/note/c2"
    },
    {
      "note": "C#2",
      "flat": "Db2",
      "midi": 37,
      "octave": 2,
      "pianoKey": 17,
      "hz": 69.3,
      "url": "https://tunestand.com/note/c-sharp-2"
    },
    {
      "note": "D2",
      "flat": "D2",
      "midi": 38,
      "octave": 2,
      "pianoKey": 18,
      "hz": 73.42,
      "url": "https://tunestand.com/note/d2"
    },
    {
      "note": "D#2",
      "flat": "Eb2",
      "midi": 39,
      "octave": 2,
      "pianoKey": 19,
      "hz": 77.78,
      "url": "https://tunestand.com/note/d-sharp-2"
    },
    {
      "note": "E2",
      "flat": "E2",
      "midi": 40,
      "octave": 2,
      "pianoKey": 20,
      "hz": 82.41,
      "url": "https://tunestand.com/note/e2"
    },
    {
      "note": "F2",
      "flat": "F2",
      "midi": 41,
      "octave": 2,
      "pianoKey": 21,
      "hz": 87.31,
      "url": "https://tunestand.com/note/f2"
    },
    {
      "note": "F#2",
      "flat": "Gb2",
      "midi": 42,
      "octave": 2,
      "pianoKey": 22,
      "hz": 92.5,
      "url": "https://tunestand.com/note/f-sharp-2"
    },
    {
      "note": "G2",
      "flat": "G2",
      "midi": 43,
      "octave": 2,
      "pianoKey": 23,
      "hz": 98,
      "url": "https://tunestand.com/note/g2"
    },
    {
      "note": "G#2",
      "flat": "Ab2",
      "midi": 44,
      "octave": 2,
      "pianoKey": 24,
      "hz": 103.83,
      "url": "https://tunestand.com/note/g-sharp-2"
    },
    {
      "note": "A2",
      "flat": "A2",
      "midi": 45,
      "octave": 2,
      "pianoKey": 25,
      "hz": 110,
      "url": "https://tunestand.com/note/a2"
    },
    {
      "note": "A#2",
      "flat": "Bb2",
      "midi": 46,
      "octave": 2,
      "pianoKey": 26,
      "hz": 116.54,
      "url": "https://tunestand.com/note/a-sharp-2"
    },
    {
      "note": "B2",
      "flat": "B2",
      "midi": 47,
      "octave": 2,
      "pianoKey": 27,
      "hz": 123.47,
      "url": "https://tunestand.com/note/b2"
    },
    {
      "note": "C3",
      "flat": "C3",
      "midi": 48,
      "octave": 3,
      "pianoKey": 28,
      "hz": 130.81,
      "url": "https://tunestand.com/note/c3"
    },
    {
      "note": "C#3",
      "flat": "Db3",
      "midi": 49,
      "octave": 3,
      "pianoKey": 29,
      "hz": 138.59,
      "url": "https://tunestand.com/note/c-sharp-3"
    },
    {
      "note": "D3",
      "flat": "D3",
      "midi": 50,
      "octave": 3,
      "pianoKey": 30,
      "hz": 146.83,
      "url": "https://tunestand.com/note/d3"
    },
    {
      "note": "D#3",
      "flat": "Eb3",
      "midi": 51,
      "octave": 3,
      "pianoKey": 31,
      "hz": 155.56,
      "url": "https://tunestand.com/note/d-sharp-3"
    },
    {
      "note": "E3",
      "flat": "E3",
      "midi": 52,
      "octave": 3,
      "pianoKey": 32,
      "hz": 164.81,
      "url": "https://tunestand.com/note/e3"
    },
    {
      "note": "F3",
      "flat": "F3",
      "midi": 53,
      "octave": 3,
      "pianoKey": 33,
      "hz": 174.61,
      "url": "https://tunestand.com/note/f3"
    },
    {
      "note": "F#3",
      "flat": "Gb3",
      "midi": 54,
      "octave": 3,
      "pianoKey": 34,
      "hz": 185,
      "url": "https://tunestand.com/note/f-sharp-3"
    },
    {
      "note": "G3",
      "flat": "G3",
      "midi": 55,
      "octave": 3,
      "pianoKey": 35,
      "hz": 196,
      "url": "https://tunestand.com/note/g3"
    },
    {
      "note": "G#3",
      "flat": "Ab3",
      "midi": 56,
      "octave": 3,
      "pianoKey": 36,
      "hz": 207.65,
      "url": "https://tunestand.com/note/g-sharp-3"
    },
    {
      "note": "A3",
      "flat": "A3",
      "midi": 57,
      "octave": 3,
      "pianoKey": 37,
      "hz": 220,
      "url": "https://tunestand.com/note/a3"
    },
    {
      "note": "A#3",
      "flat": "Bb3",
      "midi": 58,
      "octave": 3,
      "pianoKey": 38,
      "hz": 233.08,
      "url": "https://tunestand.com/note/a-sharp-3"
    },
    {
      "note": "B3",
      "flat": "B3",
      "midi": 59,
      "octave": 3,
      "pianoKey": 39,
      "hz": 246.94,
      "url": "https://tunestand.com/note/b3"
    },
    {
      "note": "C4",
      "flat": "C4",
      "midi": 60,
      "octave": 4,
      "pianoKey": 40,
      "hz": 261.63,
      "url": "https://tunestand.com/note/c4"
    },
    {
      "note": "C#4",
      "flat": "Db4",
      "midi": 61,
      "octave": 4,
      "pianoKey": 41,
      "hz": 277.18,
      "url": "https://tunestand.com/note/c-sharp-4"
    },
    {
      "note": "D4",
      "flat": "D4",
      "midi": 62,
      "octave": 4,
      "pianoKey": 42,
      "hz": 293.66,
      "url": "https://tunestand.com/note/d4"
    },
    {
      "note": "D#4",
      "flat": "Eb4",
      "midi": 63,
      "octave": 4,
      "pianoKey": 43,
      "hz": 311.13,
      "url": "https://tunestand.com/note/d-sharp-4"
    },
    {
      "note": "E4",
      "flat": "E4",
      "midi": 64,
      "octave": 4,
      "pianoKey": 44,
      "hz": 329.63,
      "url": "https://tunestand.com/note/e4"
    },
    {
      "note": "F4",
      "flat": "F4",
      "midi": 65,
      "octave": 4,
      "pianoKey": 45,
      "hz": 349.23,
      "url": "https://tunestand.com/note/f4"
    },
    {
      "note": "F#4",
      "flat": "Gb4",
      "midi": 66,
      "octave": 4,
      "pianoKey": 46,
      "hz": 369.99,
      "url": "https://tunestand.com/note/f-sharp-4"
    },
    {
      "note": "G4",
      "flat": "G4",
      "midi": 67,
      "octave": 4,
      "pianoKey": 47,
      "hz": 392,
      "url": "https://tunestand.com/note/g4"
    },
    {
      "note": "G#4",
      "flat": "Ab4",
      "midi": 68,
      "octave": 4,
      "pianoKey": 48,
      "hz": 415.3,
      "url": "https://tunestand.com/note/g-sharp-4"
    },
    {
      "note": "A4",
      "flat": "A4",
      "midi": 69,
      "octave": 4,
      "pianoKey": 49,
      "hz": 440,
      "url": "https://tunestand.com/note/a4"
    },
    {
      "note": "A#4",
      "flat": "Bb4",
      "midi": 70,
      "octave": 4,
      "pianoKey": 50,
      "hz": 466.16,
      "url": "https://tunestand.com/note/a-sharp-4"
    },
    {
      "note": "B4",
      "flat": "B4",
      "midi": 71,
      "octave": 4,
      "pianoKey": 51,
      "hz": 493.88,
      "url": "https://tunestand.com/note/b4"
    },
    {
      "note": "C5",
      "flat": "C5",
      "midi": 72,
      "octave": 5,
      "pianoKey": 52,
      "hz": 523.25,
      "url": "https://tunestand.com/note/c5"
    },
    {
      "note": "C#5",
      "flat": "Db5",
      "midi": 73,
      "octave": 5,
      "pianoKey": 53,
      "hz": 554.37,
      "url": "https://tunestand.com/note/c-sharp-5"
    },
    {
      "note": "D5",
      "flat": "D5",
      "midi": 74,
      "octave": 5,
      "pianoKey": 54,
      "hz": 587.33,
      "url": "https://tunestand.com/note/d5"
    },
    {
      "note": "D#5",
      "flat": "Eb5",
      "midi": 75,
      "octave": 5,
      "pianoKey": 55,
      "hz": 622.25,
      "url": "https://tunestand.com/note/d-sharp-5"
    },
    {
      "note": "E5",
      "flat": "E5",
      "midi": 76,
      "octave": 5,
      "pianoKey": 56,
      "hz": 659.26,
      "url": "https://tunestand.com/note/e5"
    },
    {
      "note": "F5",
      "flat": "F5",
      "midi": 77,
      "octave": 5,
      "pianoKey": 57,
      "hz": 698.46,
      "url": "https://tunestand.com/note/f5"
    },
    {
      "note": "F#5",
      "flat": "Gb5",
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      "octave": 5,
      "pianoKey": 58,
      "hz": 739.99,
      "url": "https://tunestand.com/note/f-sharp-5"
    },
    {
      "note": "G5",
      "flat": "G5",
      "midi": 79,
      "octave": 5,
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      "url": "https://tunestand.com/note/g5"
    },
    {
      "note": "G#5",
      "flat": "Ab5",
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      "octave": 5,
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      "hz": 830.61,
      "url": "https://tunestand.com/note/g-sharp-5"
    },
    {
      "note": "A5",
      "flat": "A5",
      "midi": 81,
      "octave": 5,
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      "url": "https://tunestand.com/note/a5"
    },
    {
      "note": "A#5",
      "flat": "Bb5",
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      "octave": 5,
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      "hz": 932.33,
      "url": "https://tunestand.com/note/a-sharp-5"
    },
    {
      "note": "B5",
      "flat": "B5",
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      "hz": 987.77,
      "url": "https://tunestand.com/note/b5"
    },
    {
      "note": "C6",
      "flat": "C6",
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      "octave": 6,
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      "hz": 1046.5,
      "url": "https://tunestand.com/note/c6"
    },
    {
      "note": "C#6",
      "flat": "Db6",
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      "url": "https://tunestand.com/note/c-sharp-6"
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    {
      "note": "D6",
      "flat": "D6",
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      "url": "https://tunestand.com/note/d6"
    },
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      "note": "D#6",
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      "url": "https://tunestand.com/note/d-sharp-6"
    },
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      "note": "E6",
      "flat": "E6",
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      "url": "https://tunestand.com/note/e6"
    },
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      "note": "F6",
      "flat": "F6",
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      "url": "https://tunestand.com/note/f6"
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      "note": "F#6",
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      "url": "https://tunestand.com/note/f-sharp-6"
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      "note": "G6",
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      "note": "G#6",
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      "url": "https://tunestand.com/note/g-sharp-6"
    },
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      "note": "A6",
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      "url": "https://tunestand.com/note/a6"
    },
    {
      "note": "A#6",
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      "url": "https://tunestand.com/note/a-sharp-6"
    },
    {
      "note": "B6",
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      "url": "https://tunestand.com/note/b6"
    },
    {
      "note": "C7",
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      "url": "https://tunestand.com/note/c7"
    },
    {
      "note": "C#7",
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      "url": "https://tunestand.com/note/c-sharp-7"
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    {
      "note": "D7",
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      "url": "https://tunestand.com/note/d7"
    },
    {
      "note": "D#7",
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      "url": "https://tunestand.com/note/d-sharp-7"
    },
    {
      "note": "E7",
      "flat": "E7",
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      "octave": 7,
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