Rock Band to release Nirvana track pack.

Harmonix and MTV Games announced today the release of a 7 track Nirvana pack for Rock Band. All songs are master recordings.

Songs to be released are:

Breed, Lounge Act, On a Plain, Polly, Something in the Way, Stay Away, & Territorial Pissings.

October 21, 2008 for the Xbox 360 and October 23, 2008, for the PlayStation 3, note this is US release dates.