A deep South tradition will come to Birmingham June 14-16 when the National Sacred Harp Singing Convention is held at Trinity United Methodist Church, which is located at 1400 Oxmoor Road in Homewood, near Birmingham. The free, interednomininational sacred harp event is open to the public, with singing each of the three days from 9:30 a.m. till 2:30 p.m., with…