Posch, Alois, solo bass: professor Wiener Musikuniversität, former solo bass Wiener Philharmoniker
Borsarelli, Paolo: professor Conservatorio Statale di Musica di Cuneo
Felsch, Christine: Deutsches Symphonie-Orchester Berlin
Gonzalez, Johanee: solo bass Philharmonisches Orchesters Gran Canaria, assistent solo bass Orchestra Mozart, former solo bass Gustav Mahler Jugendorchester
Grenda, Slawomir: solo bass Münchner Philharmoniker
Hong, Sung-Hyuck: Mahler Chamber Orchestra
Khachatryan, Hayk: Mahler Chamber Orchestra
Kratochvil, Stepan: Münchner Philharmoniker
Marlali, Burak: Mahler Chamber Orchestra
Stoijn, Rick: solo bass Arnhem Philharmonic und solo bass Amsterdam Sinfonietta