What did the Russian composer who composed Pictures at an Exhibition invest 
Pictures at an Exhibition (disambiguation): Pictures at an Exhibition is a suite of ten piano pieces composed by Modest Mussorgsky. 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". Modest Mussorgsky:  He was an innovator of Russian music in the romantic period. Modest Mussorgsky:  He strove to achieve a uniquely Russian musical identity, often in deliberate defiance of the established conventions of Western music.
Russian music