Prague Philharmonic Choir

Lukas Vasilek

Bregenz Festival Choir

Benjamin Lack

Children’s Choir of Musikmittelschule Bregenz-Stadt

Wolfgang Schwendinger

Gaëlle Arquez

Daniel Johansson

Elena Tsallagova

Jana Baumeister

Marion Lebègue

Rafael Fingerlos

Sébastien Soulès

Simeon Esper

Dariusz Perczak

Stefan Wallraven