On her first release since swiping last year's Best New Artist Grammy from poor, defenseless Justin Bieber, the singer-bassist sounds eager for a pop crossover check out her funky take on Michael Jackson's ''I Can't Help It,'' and ''City of Roses,'' a soulful pair-up with Q-Tip. But Radio Music Society is no dumb-down job: Closer ''Smile Like That'' finds her brandishing sour notes (and revered sideman Jack DeJohnette on the drums) with jazz-nerd verve. B
Best Tracks:Lustrous lead single Black Gold
Horn-enriched Radio Song

