- Richard Zielinski Singers
- Cynthia Baer, Kris Yenney, Denise Owen, The Choral Project, Eleanor Angel, Robin Mayforth, Daniel Hughes, Kevin Schieberl, Marc Hughes, Jacques Maitre, Carolyn Derwing, Damon Tribble, Robin Dahlberg, Lilly Schlachta, Kathleen Nitz & D. Asa Stern
- The Choral Project
- The Concordia Choir
- Octarium
- Richland High School Chorale, Renetta Frisque, Patricia Neighbors, Sam Houston State University Chorale, Robert Hunt & Allen Hightower
- Bowling Green State University A Cappella Choir, William Skoog & Kathryn Smith