Цар Калоян: Iii Действие, I Картина Sabin Markov, Boyan Katsarski, Milen Paounov, Reni Penkova, Maria Ventsislavova, Boris Bogdanov, Evgenia Babacheva, Lyuben Mihailov, Zhivko Pranchev, Alexander Vladigerov, And Sofia National Opera Orchestra