Roland Büchner, Regensburg Cathedral Choir, David Cordier, Wiener Sängerknaben, Helmut Froschauer, Cologne Radio Orchestra, Martin Flämig, Dresdner Kreuzchor, Michael-Christfried Winkler, Emil Tabakov, Bulgarian National Choir, Frankfurt Vocal Ensemble, Ralf Otto, Basso, Il, Berlin Singakademie, Staatskapelle Berlin, Dietrich Knothe, Berlin Radio Choir, Marcus Creed, Rundfunk-Sinfonieorchester Berlin, RIAS Chamber Chorus, Jorg-Peter Weigle, Leipzig Radio Chorus, male section, Sofia Philharmonic Orchestra, Peter Marschik, Stuttgart Philharmonic Orchestra, Michael Knapp, Ernst Jankowitsch, RIAS Symphony Orchestra, Rheinische Kantorei, Das Kleine Konzert, Hermann Max, CantArte Regensburg, Hubert Velten, Gabriele Ferro, Cologne Radio Chorus, Cappella Coloniensis, Herbert Lippert, Ildikò Raimondi, Bernarda Fink, Martin Haselbock, Vienna Academy, Helmut Wildhaber, Hugo Distler Choir, Uwe Gronostay, Janos Ferencsik, Bratislava Philharmonic Chorus, Bratislava Philharmonic Orchestra, Rudolf Barshai, Russian National Orchestra, Ursula Fiedler, Jakob Stampfli, Barbara Hölzl, Werner Hollweg, Sveshnikov Boys and Men's Choir, Celina Lindsley, Franco de Grandis, Vincente Ombuena Valls, Stefania Toczyska, Olga Romanko, Moscow Rybin Choir, Georgi Robev, Boris Christoff, Todor Grigorov, Sofia Orthodox Ensemble, Miroslav Popsavov & Nicola Ghiuselev
Dame Joan Sutherland, Anastasios Vrenios, Gabriel Bacquier, Martina Arroyo, Huguette Tourangeau, Philharmonia Orchestra, Nicola Ghiuselev & Richard Bonynge
Hans Vonk, Staatskapelle Dresden, Renato Bruson, Roberto Paternostro, NHK Chamber Soloists, Josef Protschka, Munich Radio Orchestra, Kurt Peter Eichhorn, Sona Ghazarian, Ruth Ziesak, Marcus Creed, Berlin Deutsches Symphony Orchestra, Deutsches Symphony Orchestra, Berlin, Giuseppe Sabbatini, Jochen Kowalski, Hartmut Haenchen, Carl Philipp Emanuel Bach Chamber Orchestra, Cecilia Bartoli, Michele Pertusi, Rundfunk-Sinfonieorchester Berlin, Natale de Carolis, Petra-Maria Schnitzer, Dimiter Dimitrov, Sofia Symphony Orchestra, Elizabeth Carter, Claudio Otelli, Sumi Jo, Michael Knapp, Gisella Pasino, Gertrud Ottenthal, Daniela Lojarro, Marco Chingari, Nicola Ghiuselev, Sofia Philharmonic Orchestra, Rouslan Raichev, Hermann Prey, Kurt Wöss, Bratislava Philharmonic Orchestra, Marcello Viotti, Frankfurt Radio Symphony, Bamberg Symphony Chorus, Kurt Rydl, Wilfried Gahmlich, Jeanine Thames, Sylvia Greenberg & Jerrold van der Schaaf
Sofia National Opera Chorus, Ivan Marinov, Sofia National Opera Orchestra, Nicola Ghiuselev, Alexandrina Milcheva, Maria Dimchevska, Verter Vrachovsky, Yulia Wiener-Chinesheva, Nikola Nikolov, Nikolay Smochevsky & Stefan Tsiganchev
Milen Paounov, Pavel Gerdjikov, Sofia National Opera Orchestra, Alexandrina Milcheva, Stefka Popangelova, Georgi Genov, Ivan Marinov, Nicola Ghiuselev, Liliana Vassileva, Verter Vrachovsky, Sofia National Opera Chorus, Tsvetanka Arshinkova & Nikola Nikolov
