Known for his funkified cameos on hits by Mariah Carey, Notorious B.I.G., and mentor Puff Daddy, rap’s newest bad boy Mase more than holds his own on his solo debut Harlem World. Like Puff Daddy, he laces hardcore raps with pop hooks and drops Big Willie boasts on cuts like ”Do You Wanna Get $”; his distinctive marble-mouthed drawl, however, creates a regular-guy persona all too rare in hip-hop. B+