Imagine Taylor Hicks blowing into his iPhone rather than the traditional metal and wooden mouth harp he normally uses. It could happen:
iPhone Harmonica application:
iPhone guitar and bands, what a fun concept. I especially love the guitar application idea. You could sound so great and not blister up your fingertips. Of course, it won't replace the real deal.
This is The Mentalists, an all girl iPhone group - they're quite good.
Check out this bit of technical creativity, "Smokey Bubbles"
Really amazingly entertaining, fascinating to see what fun you can have with your phone. Who'd have thought?