THE ROOTS Phrenology (MCA) The Illadelph crew returns from a three-year hiatus with guests Talib Kweli, Nelly Furtado, and Cody ChesnuTT.

JENNIFER LOPEZ This Is Me…Then (Epic) Is it just a coincidence that the whirlwind of publicity around J. Lo’s engagement to Ben Affleck comes at the same time as the release of her new album and single? No, it’s not.

SUM 41 Does This Look Infected? (Island) The pop-punks drop a follow-up to All Killer, No Filler that features ”,” a song about Anna Nicole Smith, and two tracks by the band’s death-metal alter ego, Pain for Pleasure.

TIM MCGRAW Tim McGraw and the Dancehall Doctors (Curb) The country crooner cooked up some controversy with the album’s first single, ”Red Rag Top,” which deals with the emotional aftermath of an abortion.