Aleksandr Scriabin, in full Aleksandr Nikolayevich Scriabin, Scriabin also spelled Skriabin, or Skryabin, (born Dec. 25, 1871 [Jan. 6, 1872, New Style], Moscow, Russia—died April 14 [April 27], 1915, Moscow), Russian composer of piano and orchestral music noted for its unusual harmonies through which the composer sought to explore musical symbolism.

Scriabin was trained as a soldier at the Moscow Cadet School from 1882 to 1889 but studied music at the same time and took piano lessons. In 1888 he entered the Moscow Conservatory, where he studied the piano with V.I. Safonov and composition with Sergey Taneyev and Anton Arensky. By 1892, when he graduated from the conservatory, he had composed the piano pieces that constitute his opuses 1, 2, 3, 5, and 7. In 1897 he married the pianist Vera Isakovich and from 1898 until 1903 taught at the Moscow Conservatory. He then devoted himself entirely to composition and in 1904 settled in Switzerland. After 1900 he was much preoccupied with mystical philosophy, and his Symphony No. 1, composed in that year, has a choral finale, to his own words, glorifying art as a form of religion. In Switzerland he completed his Symphony No. 3, first performed under Arthur Nikisch in Paris in 1905. The literary “program” of this work, devised by Tatiana Schloezer, with whom he had formed a relationship after abandoning his wife, was said to represent “the evolution of the human spirit from pantheism to unity with the universe.” Theosophical ideas similarly provided the basis of the orchestral Poem of Ecstasy (1908) and Prometheus (1911), which called for the projection of colours onto a screen during the performance.

From 1906 to 1907 Scriabin toured the United States, where he gave concerts with Safonov and the conductor Modest Altschuler, and in 1908 he frequented theosophical circles in Brussels. In 1909 he was encouraged by the conductor Serge Koussevitzky, who both performed and published his works, to return to Russia. By then he was no longer thinking in terms of music alone; he was looking forward to an all-embracing “Mystery.” This work was planned to open with a “liturgical act” in which music, poetry, dancing, colours, and scents were to unite to induce in the worshipers a “supreme, final ecstasy.” He wrote the poem of the “Preliminary Action” of the “Mystery” but left only sketches for the music.

Scriabin’s reputation stems from his grandiose symphonies and his sensitive, exquisitely polished piano music. His piano works include 10 sonatas (1892–1913), an early concerto, and many preludes and other short pieces. Although Scriabin was an idolater of Frédéric Chopin in his youth, he early developed a personal style. As his thought became more and more mystical, egocentric, and ingrown, his harmonic style became ever less generally intelligible. Meaningful analysis of his work only began appearing in the 1960s, and yet his music had always attracted a devoted following among modernists.