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