Chamber, Duos, Kiel (composer)

Anna Kreetta Gribajcevic (viola), Oliver Triendl (piano)

Bernard Zaslav (viola), Naomi Zaslav (piano)

Anna Barbara Dütschler (Viola) Marc Pantillon (Piano)

Hans-Christoph Becker-Foss (organ), Martin Schnellenberg (organ), Ernst Riedlinger (organ), Hans-Dieter Weber (organ), Frank Berger (trumpet), Werner Simons (organ), Francis Jackson (organ), Ullrich Böhme (organ), Martin Baker (organ), Andrew Lumsden (organ), Kevin Bowyer (organ), James O'Donnell...

Claudius Herrmann (cello), Saiko Sasaki (piano)

Rainer Moog (viola), Megumi Hashiba (piano)