Wii visual Theremin
The first electronic musical instrument ever and the only instrument played without touching it? The Theremin. Now in the future you ainīt need antennas you can make it wireless and use fancy light - of course brought to you by the awesomeness of the wii controller (has there ever been a piece of computing hardware this versatile while being that cheap?)
Now with that out of the way you can read stuff and watch a movie on how it works.
Is it not the coolest interface ever for a 303?