Modest Mussorgsky (1839-1881) was a Russian composer known for his contributions to classical music, particularly within the realm of Romanticism. He is celebrated for his innovative approach to harmony, orchestration, and the use of folkloric elements in his compositions. **Notable Works:** 1. **Pictures at an Exhibition** (1874) - Originally composed for piano and later orchestrated by Maurice Ravel, this suite is one of Mussorgsky's most famous pieces, inspired by an art exhibition and showcasing vivid musical imagery. 2. **Night on Bald Mountain** (1867) - A tone poem that depicts a witches' sabbath, it has become a staple in the orchestral repertoire. 3. **Boris Godunov** (1868) - An opera based on the historical figure, it is notable for its use of Russian folk themes and realism, and is considered one of the greatest Russian operas. **Impact on Music:** M