Electronic Arts (EA) just released the iPhone / iPod Touch version its popular game Rock Band. The rhythm game that allows up to 4 players who can play simultaneously via Bluetooth connection. While graphics and imagery are very on par with its console sibling. Playing the game on a small screen is entirely opposite.
Each instrument can be played by tapping on the touch-screen, including the singing part. Perhaps due to the lack of a mic on the iPod Touch. The app costs $10 and additional song cost $.50.