Alexander Nikolayevich Scriabin (/skriˈɑːbɪn/; Russian: Алекса́ндр Никола́евич Скря́бин [ɐlʲɪˈksandr nʲɪkəˈɫaɪvʲɪtɕ ˈskrʲæbʲɪn]; 6 January 1872 [O.S. 25 December 1871] – 27 April [O.S. 14 April] 1915) was a Russian composer and pianist. Scriabin, who was influenced early in his life by the works of Frédéric 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.