Alexander Nikolayevich Scriabin (; , ; – ) was a Russian composer and pianist. Scriabin, who was influenced by Frédéric Chopin, composed early works that are characterised by tonal language. 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.