Catloaf

I would use the You Rock Guitar to compose and create music for an indie game that I would now be making entirely by my lonesome.

I've already got the know-how to do the graphics and the programming and an idea of what I wanna do. The two things I lack right now are time and the ability to create my own sfx/music.

If I win, it will convince me to (sadly) give up playing videogames for a while and instead sit down and make one, loosing sleep on something productive for once.

Remembering Zelda: Twilight Princess, I think the controls look good. Hitting the ground with a flick of your sounds to be just as natural as a quick waggle to attack.