This has to be one of the coolest apps we've seen for the iPhone. iAno is a newly released iPhone application that turns your iPHone into a piano. As you can see in the video, iAno provides a multi-touch piano that you can really play (sorta). It has a four-octave keyboard that can play 5 notes at the same time. The keyboard is navigated with arrow keys above the keyboard.

iAno was devloped by a developer going by the name of Mr Aardvark. Very cool!