Rock Band Track Pack: Volume 2 is a standalone musical expansion to Rock Band and Rock Band 2, the smash-hit collaborative, competitive, and single player music game. Rock Band lets you and your friends form your own band and live out your rock and roll fantasies to music s greatest soundtrack. The Track Pack contains 20 seminal hits from the 1980 s, 90 s, all the way into the first decade of the current millennium that have been hand-picked for players with care by game developer, Harmonix, and is also compatible with most Guitar Hero and other instrument controllers.