The joint is truly jumpin’ throughout director/choreographer Jeffrey L. Page’s singular, boldly theatrical treatment of “Ain’t Misbehavin’: The Fats Waller musical,” which opened over the weekend at Barrington Stage Company’s Boyd-Quinson Stage.

Raised in the Berkshires, actor-singer Mike Wartella was only a baby in 1988 when rocker Dion DiMucci — better known as Dion – published his autobiography. Thirty-four years later, Wartella is playing Dion in a jukebox biomusical, “The Wanderer,” which is having its world premiere through April 24 at the Tony Award-winning Paper Mill Playhouse in Millburn, N.J.