Hip-hop metalsmith El-P continues to score the impending robot uprising on this 46-minute, quasi-industrial instrumental suite. With double-time beats, Trent Reznorlevel distortion, lost-in-the- matrix digital doodles, and the occasional gunshot, megamixxx3 works like a headbanger companion to El’s 2007 album, I’ll Sleep When You’re Dead-soaring, paranoid, and ghoulish. Swooping synths squirm uneasily out of the same early-’80s retro-future haunted by Giorgio Moroder, Francis Monkman, and Vangelis; but this hip-hop purist jams them all through the blustery, moody boom of Schoolly D’s crusty slaughterhouse.