Some interesting additions to Guitar Hero: World Tour coming in December, most notable are three tracks from Nirvana including one from the band's Sub Pop Records debut, Bleach. The track, "Negative Creep," will be featured along with the non-album single, "Sliver" and "You Know You're Right," which was released posthumously on 2002's Nirvana [Greatest Hits].

Along with Nirvana, a new set of "reggae" tracks from Slightly Stoopid, The Expendables and Pepper will appear in December, as well as three songs from Smashing Pumpkins including "1979."

Update: Oops. That's Guitar Hero: World Tour, not Rock Band 2. Sorry about that.