Christ, Wolfram (solo viola): solist, Professor Musikhochschule Freiburg
Poppen, Diemut (solo viola): chamber musician, Musikhochschule Saarbrücken
Bauer, Ivo: Leipziger Streichquartett
Bremond, Florent: Mahler Chamber Orchestra
Christ, Tanja: former Berliner Philharmoniker
Hagen, Silvia: chamber musician
Hunter, Joel: Mahler Chamber Orchestra
Jandl, Simone: Orchestra Mozart, Chamber Orchestra of Europe
Muthelet, Beatrice: Mahler Chamber Orchestra
Neher, Julia: solo viola Stuttgarter Kammerorchester
Niewöhner, Dirk: Münchner Philharmoniker
Puchades Escribà, Josep: Mahler Chamber Orchestra
Puig Torné, Anna: Mahler Chamber Orchestra
Razera, Alexandre: Mahler Chamber Orchestra
Sachs, Raphael: SWR Sinfonieorchester Baden-Baden und Freiburg
Steller, Chaim: Orchestra Mozart
Tissot, Delphine: Mahler Chamber Orchestra
Waskiewicz, Danusha: Orchestra Mozart