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