I plan to getting it during Christmas Sale ($5.99 instead of $7.99) but I do have some problem. I'm using non-jailbroken iPod Touch 32GB 2nd generation. 1. Will the game crashes? Often? 2. I'm not really a fan of rock band and I hardly have any rock albums in my music library. So will I regret for buying it considering many songs are unknown to me? 3. Is the game play like beatMania / DJMax Portable whereby each note you tap will emit a certain tune? I've tried Tap Tap Revenge and I really like it except the slightly lagging of the game (when changing scene).