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