Answer: sadko

AnswerCrossword Clue
SADKOOpera by Rimski-Korsakov.
SADKOComposed by Rimsky-Korsakoff.
SADKOOpera including "Song of India."
SADKOOpera by Rimsky-Korsakov.
SADKORimsky-Korsakov opera.
SADKORussian opera.