There is no better way to understand the mission of the Boston Children’s Chorus than to let its artistic director, Anthony Trecek-King, describe it in his own words.

“We look at everything we do as a vehicle for understanding differences and working towards building a better society,” he said in a recent phone interview. He knows that that’s “awfully lofty of a thing to say,” but he believes it fully. “It’s what wakes me up every morning.”