The upcoming bundle replaces the promised debut of The Who's entire "Who's Next" album, which proved impossible after several master tracks turned up missing. Only 2 of the pack's 12 tracks--"My Generation" and "Who Are You"--have been revealed.
Each song will sell individually for $1.99, with the whole shebang going for $19.99.
"We were trying to release 'Who's Next' in its entirety, but we were unable to locate all the masters," Harmonix CEO Alex Rigopulos told The Associated Press. "In the face of that, [surviving band members] Pete [Townshend] and Roger [Daltrey] helped curate this best-of soundtrack of everything we were able to find."
Compatible with the fall release of Rock Band 2, the compilation will be available to Xbox 360 gamers on Tuesday, July 15, with the PlayStation 3 edition following on Thursday, July 17.