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 Koshetz Alexander Koshetz (12 September 1875 – 21 September 1944) was a Ukrainian choral conductor, arranger, composer, ethnographer, writer, musicologist, and lecturer. He helped popularize Ukrainian music around the world. His name is sometimes transliterated as Oleksandr Koshyts (Ukrainian: Олександр Кошиць ).