(Music Downloads Not Rated by the ESRB) Build your Rock Band library by purchasing this song game track pack: Nirvana Pack 01. This pack includes "Breed," "Lounge Act," "On a Plain," "Polly," "Something In the Way," "Stay Away,"and "Territorial Pissings" by Nirvana. PLEASE NOTE: Rock Band game disc is required to play song game tracks. This song game track pack includes three song game tracks at a discounted rate over individual purchases. Many Rock Band songs are available as both a multipack and as a single game track. These songs are exactly the same (unless expressly noted as a special version or remix). Be aware that it is possible to download the same song twice so please carefully consider your purchases. For song credits, visit www.RockBand.com. There are no refunds for this item. For more information, see www.xbox.com/live/accounts. Compatible with Rock Band 3 and Rock Band Blitz.