Girl Talk's mash-ups have redeemed the idea of rap rock, and this musical fantasy-football exercise won't hurt either. On Apollo, L.A. scenemakers Squeak E. Clean and DJ Zegon pull in a wild roster of stars for what feels like a playful unity jam. Kool Keith and Tom Waits sound like simpatico nut-job storytellers; John Frusciante and RZA share love for vintage garage; the late Ol' Dirty Bastard, Karen O and Fatlip (who rhymes "panty lover" with "Danny Glover") ponder their perversions. The list (M.I.A., Kanye) goes on, and even when things aren't clicking, it sounds like a celebration.