This is an interesting idea:
Bitboxland is a platform and tool for audiovisual creation and performance. Each time we collaborate with a musician we love, and then create an iPhone application with them.
Bitboxland debuts with our friend BILLIONS, a new-born space mission into the universe of sound. The application is a beatbox and VJ tool that creates juicy tunes and animations in a game-like interface. It's a unique and joyful audiovisual playground.
BitBoxLand at the app store: