Cambridge, Mass. – September 16th, 2011– Harmonix today announced that a 4-pack of hits and 10 new Pro Guitar/Bass upgrades from Nirvana will be available beginning September 20th in theRock Band 3 Music Store of downloadable content for the Xbox 360® video game and entertainment system from Microsoft, PlayStation®3 computer entertainment system and Wii™ in celebration of the 20th anniversary of their album, Nevermind.

Rock Band provides the deepest and best selection of artists, songs and albums through the Rock Band music platform, which features more than 900 artists and more than 3,000* tracks via disc and download purchase (complete list of tracks at www.rockband.com/songs). Rock Band’s gigantic music library dwarfs that of any other rhythm video game on the market. More than 100 million songs have been sold through the Rock Band Music Store since its launch Nov. 20, 2007.

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