Recently in a press release, Harmonix announced that it’s newest DLC would be celebrating the 5-disc reissue of the Nirvana’s classic album “Nevermind.” Those that are up with their Rock Band DLC will know that the entirety of “Nevermind” has already been released, albeit with a couple of live tracks. So how is Harmonix celebrating?

Celebrating Nirvana Pack

• Nirvana – “Heart-Shaped Box” X
• Nirvana – “Rape Me”
• Nirvana – “All Apologies”
• Nirvana – “You Know You’re Right”

The pack will be available for 560 MSP/$6.99/700 WPS. But along with the Guitar Hero 2 alumni “Heart-Shaped Box,” ten of the previously released “Nevermind” tracks will feature an optional PRO upgrade.

• Nirvana – “Smells Like Teen Spirit”
• Nirvana – “Breed”
• Nirvana – “Polly”
• Nirvana – “Territorial Pissings”
• Nirvana – “Lounge Act”
• Nirvana – “Stay Away”
• Nirvana – “On a Plain”
• Nirvana – “Something in the Way”
• Nirvana – “Lithium (live)”
• Nirvana – “Come As You Are (live)”

Absent are “In Bloom” and “Drain You,” which were not featured as DLC, but as part of disc exports from Rock Band and Rock Band 2 respectively. PRO upgrades will cost an additional 80 MSP/$0.99/100 WPS per song.

Additionally, if you head on over to Rock Band’s Facebook page you can enter to win a fair amount of stuff including a copy of the 2-disc version of the “Nevermind” reissue, past Nirvana DLC, and a copy of Rock Band 3. Also, if Rock Band reaches 2 million friends by September 19th, they will announce four upcoming DLC artists. Both the new DLC and the reissue of “Nevermind” will be available Tuesday, September 20th.