I've been playing it all morning(My boy moved his Xbox into my house) and it's sooooooo much fun!
I love how you can make your own character,
and then buy loads and loads of clothes!
It's way easier than Guitar Hero,
and if you don't want to shell out $180 for the full set (drums, game, mic, and guitar), you can just buy the game and use your Guitar Hero controller.
The drums are really hard though, and i haven't tried the mic yet.