Mais de Harmonics A Cappella
- Michigan Music Conference 2011 Grand Haven High School Chamber Choir & Shirley Lemon
- Bel Canto Choir Vilnius
- The Schola Cantorum of St. John XXIII Parish
- Olga Vocal Ensemble
- Ut Insieme Vocale Consonante
- The Schola Cantorum of St. Peter the Apostle & J. Michael Thompson