P. Vladigerov
Tzar Kaloyan Opera, Act III, Scene I
Sabin Markov, Reni Penkova, Aleksandar Vladigerov, Maria Ventsislavova, Sofia National Opera Orchestra
Tsar Kaloyan, Act III, Scena II
Reni Penkova, Maria Ventsislavova, Boris Bogdanov, Sabin Markov, Lyuben Mihailov, Zhivko Pranchev, Sofia National Opera Orchestra, Sofia National Opera Chorus, Milen Paounov, Boyan Katsarski, Evgenia Babacheva, Alexander Vladigerov