Marilyn Schmiege, Konrad Hünteler, Georg Fischer, Hans-Martin Linde, Ann Murray, Dame Emma Kirkby, Malcolm Frager, Cologne Chamber Choir, Peter Seymour, Paolo Barbacini, Martyn Hill, Hiro Kurosaki, Cappella Coloniensis, Gabriele Ferro, Ulf Bjorlin
Jann Engel, Ferdinand Leitner, Ann Murray, Linda Nicholson, Cologne Radio Chorus, Georg Fischer, Hans-Martin Linde, Maria Luisa Tanzini, Hans Deinzer, Sophie Boulin, Nicholas Kraemer, Cappella Coloniensis, Gabriele Ferro, Ulf Bjorlin, Ingrid Seifert, Malcolm Frager, Dame Emma Kirkby
Hans-Martin Linde, Maria Luisa Tanzini, Hartmut Haenchen, Petersen Quartet, Burkhard Glaetzner, Budapest Strings, Cologne Radio Symphony Orchestra, Concerto Köln, Johannes Goritzki, Neue Hofkapelle München, Martin Sandhoff, Béla Bánfalvi, Christoph Hammer, Werner Erhardt, Berliner Barock-Compagney, Gabriele Ferro, Ulf Bjorlin, Carl Philipp Emanuel Bach Chamber Orchestra, Christine Schornsheim, Andrea Vigh, Andrew Joy
Sveshnikov Boys and Men's Choir, Regensburg Cathedral Choir, Herbert Lippert, Stuttgart Philharmonic Orchestra, János Ferencsik, Uwe Gronostay, Russian National Orchestra, Frankfurt Vocal Ensemble, Rundfunkchor Berlin, Basso, Il, Todor Grigorov, Staatskapelle Berlin, Roland Büchner, Bulgarian National Choir, Vincente Ombuena Valls, Barbara Hölzl, WDR Sinfonieorchester Köln, Vienna Academy, Vienna Boys' Choir, Peter Marschik, Hermann Max, Helmuth Froschauer, Nicola Ghiuselev, Rheinische Kantorei, Ildikó Raimondi, Georgi Robev, MDR Rundfunkchor, Ernst Jankowitsch, Michael-Christfried Winkler, Hugo Distler Choir, Bratislava Philharmonic Chorus, Stefania Toczyska, Das Kleine Konzert, Cappella Coloniensis, Berliner Singakademie, Gabriele Ferro, Celina Lindsley, Miroslav Popsavov, Dietrich Knothe, Martin Flämig, Bernarda Fink, Sofia Orthodox Ensemble, CantArte Regensburg, Bratislava Philharmonic Orchestra, Martin Haselböck, Ursula Fiedler, Rudolf Barshai, RIAS Kammerchor, Moscow Rybin Choir, RIAS Symphony Orchestra, Olga Romanko, Michael Knapp, Dresdner Kreuzchor, Emil Tabakov, David Cordier, Helmut Wildhaber, Jakob Stampfli, Sofia Philharmonic Orchestra, Ralf Otto, Marcus Creed, Jörg-Peter Weigle, Cologne Radio Chorus, Boris Christoff, Hubert Velten, Franco de Grandis, Werner Hollweg
