Worlds -- and songs -- collide when Mushroomhead
frontman Jeffrey Nothing
(right) and Sasha
go head-to-head with DJ sets. The two vets will play everything from Lil Jon to Frank Sinatra, with a steady stream of mash-ups all night long. Expect to hear collisions like Dem Franchize Boyz vs. Korn, Young Joc vs. Mushroomhead, and Madonna vs. Gwen Stefani. "We're mixing a lot of dark rock with pop and hip-hop, from the '50s to 2007," says Sasha. "I don't think anybody's really done this in Cleveland before. It'll be a total rock and roll experience."