While still a great game in its own right, Rock Band 3 regressed from Rock Band 2 in a few disappointing ways. The content of the career mode was severely trimmed down. I can't put my finger on it, but the visuals felt like they took a bit of a step back too. The background performances lost a bit of that cinematic quality that Rock Band 1 and 2 nailed. 2 really neat additions to this game are the keyboard instrument, and vocal harmonies (up to 3 singers where applicable, for a potential max of 7 players at once!)