This is actually one of my favorite games by far. But, theres so many bugs its kind of frustrating! I used to play this a long time a go and deleted because of the bugs, I thought that since its been a while, it would be fixed, but theyre not! I downloaded again and played for a month or so, and everytime I try to play on extreme or play any song that is faster, the game would lag. The screen just froze and stays like that, when its back to normal, a lot of the notes already went trough the screen. It happens at concerts too, I just tried to play one (who needs 3000 energy to play, so its annoying to have to wait to play again), and it lagged do much, the screen was frozen so long, that when it was back, I didnt have the "miss counter" anymore and had to give up and wait for the energy to refill. So yeah, the game is very good. But the bug its really annoying and as I said before, I deleted once because I just couldnt play it anymore. I hope it gets fixed this time.