This is great Mike! I was actually going to do the exact same thing (Invention #8 a la MicroBrute)
Really curious, did you play this by hand or via MIDI sequence (or even, by sequencer)? If it was via MIDI then did you send the notes through usb? I can't seem to be able to send MIDI data through usb :/
At any rate, cool stuff and hopefully once I figure out how to properly record it I'll upload my rendition.