"If I'm behind this, this will be the most popular thing to do in gaming on the planet," says Grandmaster Flash.
The legendary DJ is closely involved in DJ Hero, the Activision game that follows Guitar Hero.
For the music itself, Activision has licensed more than 100 songs for blending and mixing - and this is where there may yet be controversy.
The Beastie Boys' Sabotage is mashed with Foo Fighters' Monkey Wrench, Nirvana's All Apologies is sliced with Rick James' Give It To Me (from DJ Shadow). See the initial list of tracks below.
Flash has advised on mixes (with two from himself) and language used, recorded voiceovers, and more.
He told Rolling Stone: "All the shit that I played. The shit that's in my boxes. I'm looking at the list and they even had some of my songs that were secrets that I scratched the title off of 'em. I'm like, 'How the fuck did you find this shit?'"
Confirmed mixes in DJ Hero:
David Bowie - Let's Dance vs KRS-1 - Jack Of Spades
Nirvana - All Apologies vs Rick James - Give It To Me
Zombies - Time Of The Season vs Chuck Brown - Bustin Loose
Grandmaster Flash - Here Comes My DJ vs Gary Numan - Cars
Herbie Hancock - Rockit vs NERD - Lapdance
Jay-Z - Izzo (HOVA) vs Eminem - My Name Is
Marvin Gaye - I Heard It Through The Grapevine vs Gorillaz - Feel Good Inc
Dizzee Rascal - Fix Up, Look Sharp vs Justice - Genesis
Gwen Stefani - Hollaback Girl vs Rick James - Give It To Me
Jurassic 5 - Jayou vs Herbie Hancock - Rockit
Tears For Fears - Shout vs Eric Prydz - Pjanoo (Radio Edit)
Black Eyed Peas - Boom Boom Pow vs Benni Benassi - Satisfaction
Beastie Boys - Sabotage vs Foo Fighters - Monkey Wrench
The other controversy is the pricing. In the USA the game is $120, but in the UK it's £108 - the equivalent of $178.