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