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