- Alexander Lingas, Patricia Rozario, Guy Protheroe, English Chamber Choir, Ann Manly & Romana Cappella
- The Saint Tikhon Choir & Benedict Sheehan
- PaTRAM Institute Singers & Peter Jermihov
- Chœur Byzantin de Grèce
- The Schola Cantorum of St. Peter the Apostle, J Michael Thompson Director