After the break, we've posted what we feel to be the best guess to what the unannounced and unreleased songs are which was compiled by Xanthous over at the Rock Band forums. We say best guess because the DLC data that was found only listed the song names and not the artists. As a result, there are some song titles that could be associated with a few different bands. Also, remember that this list is by no means official (even though data like this has predicted future Rock Band DLC) and was discovered through semi-hacking means. Then again, we're rather confident that these songs will get a Rock Band release seeing that Harmonix's hmxsean already acknowledged the leak saying that these tracks are "unconfirmed and subject to change" and to "stay tuned for confirmation of Rock Band DLC closer to their release". An official statement that sounds more like an "oops, we're bad at keeping secrets" remark than a flat out denial.
Anyway, quit reading and get clicking! There's rumored Rock Band DLC to analyze after the break ... now go!
DLC Never Previously Announced
"Zero" by Smashing Pumpkins
"(I Can't Get No) Satisfaction" by Rolling Stones
"Brown Sugar" by Rolling Stones
"Pinball Wizard" by The Who
"Rock 'n' Roll Star" by Oasis
"D.O.A." by Foo Fighters
"Sex Type Thing" by Stone Temple Pilots
"El Scorcho" by Weezer
"Why Do You Love Me?" by Garbage
"Hysteria" by Def Leppard or Muse
"Through the Monsoon" by Tokeio Hotel
"Beetlebum" by Blur
"Still Alive" by Jonathan Coulton
Grateful Dead DLC
"China Cat Sunflower"
"I Need A Miracle"
Nirvana "Nevermind" DLC
"Come as You Are"
"On a Plain"
"Smells Like Teen Spirit"
"Something in the Way"
The Who "Who's Next" DLC
"Behind Blue Eyes"