(Photo: ©Steve Ziegelmeyer) The Cincinnati Youth Choir, Young Naperville Singers and the Allegro Choirs of Kansas City will join forces to present “Songs from the Heartland: Youth Supporting UNICEF” on June 13 at 7:30 p.m. at National Presbyterian Church in Washington, D.C. The event is presented by Perform America. The ensembles, which last performed together at Carnegie Hall back in {…}