“Remember when Bruce played the Trenton War Memorial?” says Sciaky. “Yeah, I was late for that gig,” laughs Federici, Springsteen’s longtime keyboardist, now in Cutrufello’s band. “It never got better than that,” says Sciaky, shaking his head with a smile. Cutrufello, 27, gazes up at the tall, gray-haired DJ. “Oh surely it...