Double-click the green flag. Brief explanation of how it works: Each song is a costume of pixels that represent notes (x axis is pitch, y axis is time). Another sprite scans the song sprite to encode the costume into a list of notes. That same sprite then goes through the list over time, creating clones with a 'Pitch' variable that tells clones where to fall and what note to make.
big thanks to @Hobson-TV .
