RAP MUSICArriving less than a year after his diverse release PL3DGE, R. A. P. Music finds Atlanta rapper Killer Mike working exclusively with adventurous hip hop producer El P. That's exciting, and the release earns extra cool points by landing on the Adult Swim associated Williams Street label, but the album's title is an acronym for Rebellious African People Music, so don't expect the gruff one to lay off the political talk. Look for Bun B and T. I. as guest