Sofia National Opera Orchestra, Sofia National Opera Chorus, Boris Hinchev

Dieter Weller

Dominic Cossa

Orchestra of the National Opera Theatre of Sofia

Jose El Frances

Dimiter Petkov

Nicola Ghiuselev

Hungarian National Philharmonic Orchestra

Sofia Festival Orchestra

Sofia Philharmonic Orchestra

Plovdiv Philharmonic Orchestra

Mikhail Svetlov

Sofia National Opera Orchestra

Prague Festival Orchestra

RIAS Chamber Choir

Joseph Francek

Stefka Mineva

Hans Sotin & Manfred Jungwirth

Frank Joseph

Bayerischer Staatsopernchor

Joseph Frankel

Rosalind Plowright, Giorgio Zancanaro, Plácido Domingo, Evgeny Nesterenko, Anna di Stasio, Walter Gullino, Orchestra dell'Accademia Nazionale di Santa Cecilia, Carlo Maria Giulini, Coro dell'Accademia Nazionale di Santa Cecilia & Norbert Balatsch

Dieter Weber

Lyubomir Videnov

Ivor Pogorelich

Mincho Popov

Joseph Frank

Dimiter Stanchev