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

Dominic Cossa

Jose El Frances

Nicola Ghiuselev

Hungarian National Philharmonic Orchestra

Sofia Philharmonic Orchestra

Plovdiv Philharmonic Orchestra

Mikhail Svetlov

Sofia National Opera Orchestra

Prague Festival Orchestra

RIAS Chamber Choir

Joseph Francek

Hans Sotin & Manfred Jungwirth

Frank Joseph

Bayerischer Staatsopernchor

Boris Martinovitch

Orchestra of the National Opera Theatre of Sofia

Dimiter Petkov

Sofia Festival Orchestra

Stefka Mineva

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