Tap Tap Revolution: the fast-tapping iPhone music game by natetrue.

TTR has an online update feature (under “New Tracks”) where new tracks will be added (by indie artists). You can download and play them over your Wi-fi connection (downloading not recommended over EDGE but it will work).

Thanks to http://www.emuholic.com for the news.

http://cre.ations.net/creation/tap-tap-revolution