The Wartburg College Choir of Waverly, Iowa, will perform at 7 p.m. Sunday, April 22, at Trinity English Lutheran Church, 450 W. Washington Blvd., Fort Wayne. A free-will offering will be accepted. Lee Nelson directs the mixed a cappella ensemble of more than 80 voices. The choir will present nine concerts in eight states in 10 days. The Wartburg Choir has performed in Europe and South Africa and at major U.S. venues. The choir was invited to sing in the White House and the National Cathedral in 2011 and join the Czech National Symphony Orchestra in Prague for a concert in 2006.