Sergei Vasilyevich Rachmaninoff (1 April [O.S. 20 March] 1873 – 28 March 1943) was a Russian composer, virtuoso pianist, and conductor. Rachmaninoff is widely considered one of the finest pianists of his day and, as a composer, one of the last great representatives of Romanticism in Russian classical music. Early influences of Tchaikovsky, Rimsky-Korsakov, and other Russian composers gave way to a thoroughly personal idiom notable for its song-like melodicism, expressiveness, dense contrapuntal textures, and rich orchestral colours. The piano is featured prominently in Rachmaninoff's compositional output and he used his skills as a performer to fully explore the expressive and technical possibilities of the instrument.
Born into a musical family, Rachmaninoff began learning the piano at the age of four. He studied piano and composition at the Moscow Conservatory, from which he graduated in 1892, having already written several compositions. In 1897, following the disastrous premiere of his Symphony No. 1, Rachmaninoff entered a four-year depression and composed little, until supportive therapy allowed him to complete his well-received Piano Concerto No. 2 in 1901.