See how you can use iPhone as a Music Intrument,i got this video from youtube.I really like this,..
Lady Gaga -- Poker Face by Applegirl (ver. I-Phone Apps)

Irreplaceable by beyonce (ver. I-Phone Apps)


Iphone guitar hotel california -- Preciso de um Destes


IPhone Guitar -- The Godfather Theme


GuitarStudio on the iPhone: Stairway