..is not like the others.
AC/DC. Aerosmith. Metallica. The Beatles. Green Day.
That's the next band we'll be mashing buttons on plastic guitars to? Green Day? I'm pretty sure I can come up with a dozen bands easily that would merit a full title to themselves before I ever thought of Green Day. Not all of them would want to be immortalized in such a way, but after getting the remaining members of The Beatles to agree to work with you, the next band you went after was Green Day? They barely have enough songs (IMO) for a download pack, much less an entire game.
Give me a call when you get Led Zep to sign on the dotted line.