Alexander Nikolayevich Scriabin (6 January 1872 – 27 April 1915) was a Russian composer and pianist. Scriabin, who was influenced early in his life by the work of Frederic Chopin, composed works that are characterised by a highly tonal idiom (these works are associated with his "first stage" of compositional output). Later in his career, independently of Arnold Schoenberg, Scriabin developed a substantially atonal and much more dissonant musical system, which accorded with his personal brand of mysticism. Scriabin was influenced by synesthesia, and associated colours with the various harmonic tones of his atonal scale, while his colour-coded circle of fifths was also influenced by theosophy. He is considered by some to be the main Russian Symbolist composer.