It responds automatically to MIDI song files, and the colors correspond to the notes. Works with any software synthesizer that can send USB MIDI and play audio at the same time.

Videos:


https://www.youtube.com/watch?v=rPOaQO6Vh8E
https://www.youtube.com/watch?v=aX763yNhkF4

Instructions & Code:
http://lights4music.com/instructions2.html
If there's enough interest, I might sell kits or finished products in the future, but for now it's just a how-to web page for DIY folks.