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 Vertinsky Alexander Nikolayevich Vertinsky (Russian: Алекса́ндр Никола́евич Верти́нский , 21 March 1889 in Kiev — 21 May 1957 in Leningrad, Polish: "Aleksander Wertyński" ) was a Russian and Soviet artist, poet, singer, composer, cabaret artist and actor who exerted seminal influence on the Russian tradition of artistic singing.