Musicator

Black keys have two names for one sound. Which name a song uses depends on its key signature — D♭ major is written with 5 flats, so it isn't called C♯ major. The greyed spelling is the other name for the same key.

Songs that use every pitch you pick.

How often chords land off the beat, measured from the MIDI. Blank for songs whose transcription is quantized to the beat — that file can't show rhythm.