Go to nim.com/watch/ for more about this movie and others.
Info for this video
Piano music by F. Chopin, with harmonic interval types shown with colored lines. This type of display is available as the "YARN" display in w.musanim.com/player/ Note: If you have trouble with sync or audio quality, go to w.vimeo.com/user=musanim/clips and download the original (m4v) version.
I made this rendition in the early days of MIDI, by laying down left hand and right hand tracks individually, not in real time.
BTW: the color key at the beginning is incorrect: m2/M7 are red, the same as A4/d5.