- Benedictine Monks of the Abbey Münsterschwarzach & Pater Godehard Joppich
- The Cistercian Monks of Stift Heiligenkreuz & Ensemble Vox Gotica
- Monastic Choir of the Abbey of St. Pierre de Solesmes
- Choeur de Moines Bénédictins de l'Abbaye Santo Domingo de Silos
- Quire of Voyces
- The Brotherhood Of St. Gregory And The Sisters Of Mercy Choir