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Several composers , chief among them Nikolay Rimsky-Korsakov and Dmitri Shostakovich , have created new editions of the opera to " correct " perceived technical weaknesses in the composer 's original scores .
 Nikolay Rimsky-Korsakov, Dmitri Shostakovich
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Answer:
 Nikolay Rimsky-Korsakov, Dmitri Shostakovich