The thought of a musical at the Ahmanson Theatre conjures up images of married couples with gray hair in suits and furs, settling down to a quiet evening of entertainment. After the first few minutes of the opening song, rife with double entendres and bawdy stage blocking, it is evident that “Ain’t Misbehavin'” ain’t that kind of musical.

For most new artists in the volatile music industry, fame comes with an impending expiration date.