- Raphael Oleg, Felix Renggli, Peter Hirsch, Michael Kleiser, Xasax, Philippe Racine, Brigitte Meyer, Ruben Drole, Jens Fuhr, Beat Schneider, Edicson Ruiz, Zurich Vocal Ensemble, Barbara Bolliger, Peter Siegwart, Eric Ferrand-N'Kaoua, Sabine Bartschi, Jürg Henneberger, Martina Bovet, Ensemble Phoenix Basel, Ernesto Molinari, Zurich Collegium Novum
