Martin Tsonev. Martin Tsonev was >> in Boris Godunov - SOFIA OPERA AND BALLET Mario Krastev. Mario Krastev was >> in Boris Godunov - SOFIA OPERA AND BALLET Irina Zhekova. Irina Zhekova was >> in Boris Godunov - SOFIA OPERA AND BALLET Rumyana Petrova. Rumyana Petrova was >> in Boris Godunov - SOFIA OPERA AND BALLET Sergey Drobishevsky. Sergey Drobishevsky was >> in Boris Godunov - SOFIA OPERA AND BALLET Biser Georgiev. Biser Georgiev was >> in Boris Godunov - SOFIA OPERA AND BALLET Angel Hristov. Angel Hristov was >> in Boris Godunov - SOFIA OPERA AND BALLET Plamen Kartaloff. Plamen Kartaloff was >> in Boris Godunov - SOFIA OPERA AND BALLET as 'Director'Konstantin Chudovsky. Konstantin Chudovsky was >> in Boris Godunov - SOFIA OPERA AND BALLET as 'Conductor'