- Voices 21C, André de Quadros
- Great Falls High School Delphian Choir, Patrick Ryan
- Kimberly McConnell, West Salem H. S. Choir of the Titans
- Joe Weir, Atascocita High School A Cappella Choir
- Gary Seighman, Trinity University Chamber Singers
- Robin Shuford Frank, Dr. Angela Broeker, Senior High Chorus
- Oregon State University Meistersingers, Oregon State University Chamber Choir, Russell Christensen, Dr. Steven Zielke
- Joel Visker, Lincoln-Way Central H.S. Chorale, Wheaton Academy Concert Choir, Michael Bultman