By Will Hermes
Updated June 23, 2006 at 04:00 AM EDT

Jeffrey Haynes has never played dumb; he broke out of Boston as a battle MC rhyming ”thesis” with ”telekinesis,” and soon became one of rap’s sharpest political voices. He lightened up a bit last year on his fine side project, Black Dialogue, by the Perceptionists, and continues to diversify on this solo set, Mo’ Mega, his first since 2002’s apocalyptic concept LP I Phantom. His riffs on the industry hustle and groupie hygiene are funny. But as usual, it’s his more outraged political rhymes, enunciated over producer El-P’s barrel-chested beats, that you’ll replay.