Director Burgess Clark is working with a group of young actors in a nondescript studio at the Huntington Avenue YMCA. “Stop!” he says, pausing for dramatic effect. The actors have just rehearsed a musical number that’s meant to be high-spirited, practicing choreography that is new to them. “Is that happy?” he asks them. “You need to sell it to the back row!”
They take it from the top. Soprano Adena Walker belts out the tune with excitement. And emotion. Her delivery is the vocal equivalent of an exclamation point.