At Music Hack Day NYC, Tim Soo won the top prize with his invisible instruments. Using the iPhone and Wii controller as a MIDI device, he is able to create music out of thin air. Thus far, a drum set, violin, cello, bass, keyboard, and guitar have been developed with many more coming soon. How soon? Soo is currently seeking funding via Kickstarter. Check out Soo's cover of "Just The Way You Are" by Bruno Mars and his pitch video below:

The Pitch: