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