Janos Sandor, Berlin Radio Symphony Orchestra, Nicolai Ghiaurov, Gisella Pasino, Giuseppe Verdi, Denes Guylas, Bruno Lanzaretti, Janos Ferencsik, Ivan Marinov, Roberto Paternostro, Roumyana Bareva, Robert Servile, Budapest Philharmonic Orchestra, Sofia Philharmonic Orchestra, Rouslan Raychev, Marco Chingari, Boris Hinchev, Gertrud Ottenthal, Roumen Doikov, Bulgarian Radio Orchestra & Chorus Bavarian State Opera Orchestra & Chorus, Sofia National Opera Orchestra & Chorus, Manfred Schenk, Georgi Robev, Andras Korodi, Michele Pertusi, Hungarian State Opera Orchestra, Laszlo Kote, Julia Varady, Hanns-Martin Schneidt