The Guitar Hero demo packs four playable tracks within the game's Quest Mode, narrated by KISS' Gene Simmons. They are:

• Black Sabbath - "Children of the Grave"
• Foo Fighters - "No Way Back"
• Slash featuring Ian Astbury - "Ghosts"
• Dethklok - "Bloodlines"

On the DJ Hero 2 side, players will be able to experience four mixes "through various gameplay tutorials, QuickPlay and all-new multiplayer modes including Accumulator and DJ Battle." They are:

• Pussycat Dolls Featuring Busta Rhymes "Don't Cha" Mixed With Pitbull "I Know You Want Me (Calle Ocho)"
• Lady Gaga Featuring Colby O'Donis "Just Dance" Mixed With Deadmau5 "Ghosts N Stuff"
• MSTRKRFT Featuring N.O.R.E. "Bounce" (Battle Mix)
• Estelle Featuring Kanye West "American Boy" Mixed With Chic "Good Times"

Guitar Hero: Warriors of Rock will be released on September 28 for the Xbox 360, PS3, and Wii. DJ Hero 2 will launch on October 19 on the Xbox 360, PS3, and Wii. Demo download does not include plastic instruments or turntables. Let us know if you spot the DJ Hero 2 demo.