Alexander Scriabin (1872-1915)
Scriabin experimented with the construction of chords
in intervals of a fourth instead of, as was the rule in traditional
harmony, a third. A structure he designed and frequently incorporated
was his "mystic" chord, built in fourths -- C F# Bb E
A D. He was one of those who ushered in new
conceptions of dissonance and tonality. His fame rests on
several grandiose symphonic
poems of post-Wagnerian cast, such as the "Poem of Ecstasy" (1908),
as well as ten piano sonatas
and a variety of short piano pieces -- preludes,
etudes,
mazurkas, and the like.