- Benedictine Monks of Santo Domingo de Silos, Benedictine Abbey Choir Of Munsterschwarzach & Cappella Musicale del Duomo di Milano
- Fribourg Children's Choir, Schola Feminine & Schola voix d'hommes
- The Brotherhood Of St. Gregory And The Sisters Of Mercy Choir
- The Monks of the Benedictine Abbey of St. Martin & Maurus Pfaff
- The Monks of Glenstal Abbey
- Choralschola & Capella Antiqua München