Very cool video. I am clueless when it comes to music and music theory, so the interface seems a bit overwhelming to me. However, I'm sure there are people that could master this and make something worthwhile.

Btw, I've been finding a lot more music from independent artists. For example:

http://soundcloud.com/crystalfighters/champion-sound-regal-s...

http://soundcloud.com/strobehypnoticz/deadmau5-bleed-strobeh...

I hope software such as this will help flatten out the music industry some more.