- 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