Tap Tap Radiation 1.0
the author of this app says:
Tap Tap Radiation takes Tap Tap Revenge to the next level with an all-new music game designed exclusively for the iPad! Tap to the beats of more than 50 free and premium tracks including Mos Def, Lady Gaga, Pink, David Guetta and others. If you've downloaded Tap Tap Revenge, this new game will blow you away!
Requires iPhone OS 3.2 or later.