*Khovanshchina / M. Mussorgskij ; Zravko Gadjev, Nicolai Ghiaurov, Nicola Ghiuselev, Kaludi Kaludov, Alexandrina Miltcheva ; Sofia National Opera Orchestra ; Sofia National Opera Chorus ; Emil Tchakarov, [direttore] [New York] : Sony Classical, 1990 3 compact disc ; DDD ; 12 cm + 1 volume (331 p.).