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