Dataset changelog
Current version 1.0.0. Field renames bump the major version, added tunings bump the minor version, corrections bump the patch version.
1.0.0
- First public release of /api/tunings.json: 45 tunings across 12 instruments, each string carrying its note name, MIDI number and computed frequency.
- Restructured the underlying model from instrument to strings into instrument to tuning to strings, which is what makes alternate tunings expressible at all.
- Added a per-string comparison against each instrument's standard tuning, in semitones and in hertz. No other published tuning chart carries this.
- Published under CC BY 4.0 with a required attribution string.
0.9.0
- Note frequency data covering all 108 notes from C0 to B8 with MIDI numbers and piano key numbers, computed rather than transcribed. Served on the site only; the JSON endpoint arrived with 1.0.0.
0.1.0
- Standard tunings for 13 instruments, stored as pitch class plus octave so every frequency is derived from one formula.
Corrections
No factual correction has been needed yet. When one is, it appears here with the old value, the new value and the reason, rather than being changed silently. Report an error to contact.