Erich Wonder, Florence von Gerkan, Jürgen Hoffmann, Nicola Musto, Colin Wilson, Nikolaus Harnoncourt, Ernst Raffelsberger, Wolfgang Amadeus Mozart, Lorenzo da Ponte, Peter Aellig, Les McGee, Peter Brawand, Sarah Senn-Hauser, Oliver Kolb, Iris Petschen, Susanne Saudan, Verena Schoch, Peter Smith, Robert Düblin, Karl Künzler, Walter Hunziker, Sabine Huwiler, Roman Wiederkehr, Dave Morton, Bernhard Pfister, Gary Stewart, Willy Zürrer, Josef d'Bache-Kane, Mary Southgate, Lisa Lyness, Claudia Wilcox, Andy Rose, Andy Lloyd, Alan Woolford, Nikolaus Harnoncourt