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