The pieces Pictures at an Exhibition are composed by a Russian composer who belonged to this group known as what?
Modest Mussorgsky Modest Petrovich Mussorgsky (Russian: Моде́ст Петро́вич Му́соргский ; ] ; 21 March [O.S. 9 March] 1839 – 28 March [O.S. 16 March] 1881 ) was a Russian composer, one of the group known as "The Five". He was an innovator of Russian music in the romantic period. He strove to achieve a uniquely Russian musical identity, often in deliberate defiance of the established conventions of Western music.
Alexander Kasyanov Aleksandr Aleksandrovich Kasyanov (Александр Александрович Касьянов; 17 August 1891 - Gorki 13 February 1982) was a Soviet Russian composer, conductor, pianist and professor. He received the Order of Lenin in 1967, Order of the October Revolution 1981, and People's Artist of the USSR 1971.