Vassil Stefanov, Sofia Symphony Orchestra, Sofia Philharmonic Orchestra, Bulgarian National Svetoslav Obretenov Choir, Georgi Robev, Emil Tabakov, Sofia National Opera Chorus, Sofia National Opera Orchestra, Boris Hinchev, Ilona Tokody, Andras Mihaly, Hungarian State Opera Orchestra, Andras Korodi, Budapest Philharmonic Orchestra, György Melis, Vilmos Komor, János Sándor, Klára Takács, Giuseppe Patane, Rouslan Raichev, Stefka Evstatieva, Bulgarian Radio Symphony Orchestra, Stoyan Angelov, Wolfgang Schone, Pinchas Steinberg, Cologne Radio Symphony Orchestra, Claudio Otelli, Cecilia Bartoli, Rundfunk-Sinfonieorchester Berlin, Roberto Paternostro, Giuseppe Sabbatini, Michael Knapp, Gertrud Ottenthal, Hermann Prey, Bratislava Philharmonic Chamber Orchestra & Kurt Wöss
