Listen
The same twelve chorales — Bach's BWV 253 through 264 — rendered under different tunings and different settings. 18 albums, 216 recordings.
One Footed Bride Tuning
A just-intonation system of my own. Chords tuned to whole-number frequency ratios drawn from a tonality diamond, found by simulated annealing and then threaded together with Viterbi optimisation. These are successive passes at the same idea, newest first — each refines the tuning search and the orchestration over the one before it.
- Late September 2026 415-426
New set of 12 chorales
- Mid September 2026 427-438
New more challenging chorales
- Early September 2026
Fixed all_prime array
- End of August 2026
Modified durations to include simpler rhythm patterns.
- Chorale Preludes
A full chorale prelude based on the latest tuning runs.
- Just the Chorale
A short-repeats pass after six episodes of heavy compute, 12 hours of annealing and Viterbi, to see if the chorale itself can be made to sound better. The answer is yes, but at the cost of a few cents of extra movement between adjacent chords.
- Late August 2026
A short-repeats pass on a new tuning search that closes the gap in cents between adjacent chords to zero or near zero, at the cost of slightly higher integer-ratio scores.
- Minimal Movement
Optimized for minimal movement of cent values between adjacent chords with common pitch classes. The first of the d series.
- August 2026
- Late July 2026
- Early July 2026
- July 2026
- Late June 2026
- Short Repeats
A structural variant of the late-June pass, with the repeats shortened.
- June 2026
The first full pass in One Footed Bride Tuning.
Werckmeister III
A well temperament from 1691, contemporary with Bach. Keys retain distinct character rather than sounding identical.
- Werckmeister III
The same twelve chorales in a well temperament of Bach's own era — a reference point between equal temperament and just intonation.
12-tone equal temperament
The modern standard: the octave split into twelve identical steps. Every key is equally usable and no chord is perfectly in tune.
- 12-Tone Equal Temperament
The control. The same twelve chorales in the tuning of every modern piano, for direct comparison.
Early experiments
The first renders, made before the density control existed — they use the legacy max-shift setting and much slower tempos. Kept for reference; superseded by the One Footed Bride Tuning passes above.
- Early Experiments
The first attempts, at markedly slower tempos.