For 10 points—name this composer of Scheherazade, Capriccio Espagnol, and Russian Easter Festival Overture.
He wrote an opera in which Princess Olga believes she is the daughter of Prince Tokmakov before he reveals that she is actually the daughter of Tsar Ivan.  This composer's Symphony No. 1 was originally written in E flat minor and was transposed to E minor by this composer to make it easier for orchestras to play.  In addition to The Maid of Pskov, he wrote a symphonic suite which contains movements "The Kalendar Prince" and "The Sea and Sinbad's Ship", while his more well known works include one which begins with traditional asturian music to celebrate the rising of the sun, and another which contains a solo violin cadenza, which precedes a playing of the hymn "An Angel Cried Out".  For 10 points—name this composer of Scheherazade, Capriccio Espagnol, and Russian Easter Festival Overture.
He wrote an opera in which Princess Olga believes she is the daughter of Prince Tokmakov before he reveals that she is actually the daughter of Tsar Ivan.  
Nikolai Rimsky-Korsakov