- Albert Dohmen, Sonja Muhleck, Christa Mayer, Arnold Bezuyen, Annette Kuttenbaum, Anna Gabler, Wilke te Brummelstroete, Andrew Shore, Clemens Bieber, Michelle Breedt, Stephen Gould, Ralf Lukas, Fionnuala McCarthy, Manuela Bress, Bayreuth Festival Orchestra, Christian Thielemann, Martina Dike, Endrik Wottrich, Linda Watson, Simone Schröder, Edith Haller, Eva-Maria Westbroek, Hans-Peter Konig, Ulrike Helzel