The pieces Pictures at an Exhibition are composed by a Russian composer who belonged to this group known as what?
Pictures at an Exhibition (disambiguation) Pictures at an Exhibition is a suite of ten piano pieces composed by Modest Mussorgsky.
Alexander Dmitriyevich Kastalsky Alexand(e)r Dmitriyevich Kastalsky (Russian: Александр Дмитриевич Кастальский ) (28 November [O.S. 16 November] 1856 – 17 December 1926) was a Russian composer and folklorist.