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