play_music_theory

Draw, and the drawing plays.

Nine colors, each its own instrument. Lines become melodies as the
playhead crosses them. Three programs: ink on paper, a pixel lattice,
and a picture stage. Add beats, change the tempo, change keys, shuffle the drawing, or draw on the sky or an image of your choosing.

Made by Tala Schlossberg. More at playmusictheory.net.