WorthPlaying writes: "Rock Band has become a very successful franchise for Harmonix. Spread out over four systems, the game has been a great way to get multiplayer cooperative gaming happening without the need to blast someone in the face with a shotgun. One of the keys to this winning formula has been an ever-expanding catalog of songs via downloadable content. Big and small name bands have lent their content to the game to create as diverse a musical soundtrack as possible. Few games could tout a soundtrack with '60s songs from The Monkees and The Zombies mixed with some '80s stuff from Blondie joined together with Nirvana and The Grateful Dead."