Jordan is in his element today, with a tounge-in-cheek look at his latest Wizdom Music app.
Tachyon is designed to let you graphically morph between two sounds. The iPad surface is used as a multitouch XY interface, where the x-axis controls pitch and the y-axis controls the blend of two different sounds.
Despite the goofiness and gimmickry, this looks like it could be interesting! Morphing between instruments is always fun, and using the X/Y interface seems like a very fluid way to play. A price and release date have not yet been announced.