Jörg-Peter Weigle, Regensburg Cathedral Choir, Herbert Lippert, Werner Hollweg, Stuttgart Philharmonic Orchestra, János Ferencsik, Uwe Gronostay, Sveshnikov Boys and Men's Choir, RIAS Symphony Orchestra, Olga Romanko, Michael Knapp, Dresdner Kreuzchor, Emil Tabakov, David Cordier, Sofia Orthodox Ensemble, Bernarda Fink, Miroslav Popsavov, Dietrich Knothe, Martin Haselböck, Cologne Radio Chorus, Helmut Wildhaber, Jakob Stampfli, Rudolf Barshai, Ildikó Raimondi, Georgi Robev, MDR Rundfunkchor, Ernst Jankowitsch, Roland Büchner, Bulgarian National Choir, Vincente Ombuena Valls, Michael-Christfried Winkler, Ursula Fiedler, Russian National Orchestra, Frankfurt Vocal Ensemble, Rundfunkchor Berlin, Ralf Otto, Marcus Creed, Barbara Hölzl, WDR Symphony Orchestra Cologne, Vienna Academy, Vienna Boys' Choir, Peter Marschik, Hermann Max, Boris Christoff, Hubert Velten, Franco de Grandis, RIAS Kammerchor, Hugo Distler Chor, Moscow Rybin Choir, Basso, Il, Todor Grigorov, Staatskapelle Berlin, Sofia Philharmonic Orchestra, CantArte Regensburg, Bratislava Philharmonic Orchestra, Helmuth Froschauer, Nicola Ghiuselev, Rheinische Kantorei, Stefania Toczyska, Das Kleine Konzert, Cappella Coloniensis, Berliner Singakademie, Gabriele Ferro, Celina Lindsley, Martin Flaemig, Bratislava Philharmonic Chorus