* mp3 files used in the code are not allowed to use outside wonderfl.net You're free to use your own sound source for JAM, if you have rights to use it.
This entry was superior to the most "draw"-like programs, effectively combining the sound and visual along the grid lines. The arrangement of loops, standby time, tempo and parameters is truly well done.
Constraint on the visual part, when creating the sequence, is really interesting. It appeals a lot to try balancing the sound and visual in different ways.