What nationality was the composer of the symphonic poem Prince Rostislav ?
Sergei Rachmaninoff Sergei Vasilievich Rachmaninoff (Russian: Серге́й Васи́льевич Рахма́нинов , "Sergey Vasilyevich Rakhmaninov"; ] ; 1 April [O.S. 20 March] 1873 28 March 1943) was a Russian virtuoso pianist, composer, and conductor of the late-Romantic period, some of whose works are among the most popular in the romantic repertoire.
Alexander Spendiaryan Alexander Afanasyevich Spendiaryan (Spendiarov) (Armenian: Ալեքսանդր Ստեփանոսի Սպենդիարյան , Russian: Александр Афанасьевич Спендиаров , November 1, 1871, Kakhovka, Russian Empire – May 7, 1928, Yerevan, Armenia) was an Armenian born in Russia, music composer, conductor, founder of Armenian national symphonic music and one of the patriarchs of Armenian classical music. His compositions include the opera "Almast" (Armenian: Ալմաստ ՝ brilliant) and the "Yerevan Etudes," among others.