[+ White key] Adds a white key to the octave. [+ Black key] Adds an intermediate black key and a subsequent white key, both to the octave. [+ Split black key] Adds two intermediate black keys in the same position along with a subsequent white key, both to the octave. [Finish piano] You must name the white keys (black keys are automatically named). You can click the keys to play them afterwards. [Complete scale] Plays each note including the root note on the next octave. [Closest scale to 12EDO] Plays the dodecatonic scale closest to that of 12EDO's chromatic scale.
Thought about non-12 equal temperaments and decided to make this. Examples: B B W B B B - C D E F G A B - Regular 12EDO B B W B B W B B B - C D E F G H I J A B - One idealization of 17EDO SB SB B SB SB SB FB - C D E F G A B - One idealization of 19EDO SB SB B SB SB SB W B B W B SB B - C D E F G H I J K L M N A B - One idealization of 31EDO