Richard Louis Elliott, principal organist of the world-renowned Tabernacle Choir at Temple Square, will perform a concert at Trinity United Methodist Church, 120 West Park Ave., at 6 p.m. Saturday, Oct. 12. Elliott’s concert is the third in a series of Tabernacle Choir organist performances on the church’s Peace organ and pipes. The concert is free and open to all. Having a long and distinguished heritage of faithful ministry in downtown Tallahassee, Trinity United Methodist Church celebrated its 200th anniversary on Sept. 29. Many events, ranging from sermons by guest ministers to special musical performances, are continuing throughout the year in recognition.