- Benedictine Monks of Santo Domingo de Silos
- Konrad Ruhland & Niederaltaicher Scholaren
- The Cistercian Monks of Stift Heiligenkreuz & Ensemble Vox Gotica
- Fribourg Children's Choir, Schola Feminine & Schola voix d'hommes
- Quire of Voyces
- Choeur de Moines Bénédictins de l'Abbaye Santo Domingo de Silos
- The Brotherhood Of St. Gregory And The Sisters Of Mercy Choir