SIMPLE! Make a kinect program which is essentially an interface for a synthesizer with a looping/recording feature. Kind of a futuristic interface kinda like avatar. It also allows for automation of track facets based upon movement, either going to use a custom made simple sequencer, or use a fully functional one such as Ableton running in the background, handling the inputs the kinect interface generates. Ok, maybe not so simple, but super awesome.
http://www.nl-rso.org/photos/hansvonk.jpg
