Piano works were at the center of Alexander Scriabin's compositional output. As an outstanding pianist, he began writing mainly miniatures for his instrument in the style of Romantic piano pieces. But it was also Scriabin who, unlike any other composer of his generation, contributed to the continuation of the sonata tradition. Particular milestones in his output were fourth and fifth sonatas (1903 and 1907 respectively), in which one hears forms and harmonies not heard previously.
When these works are occasionally given the name "Poème" Sonatas, this indicates that they stem from the time and allude to the compositional context of Scriabin's daring orchestral works Le Divin Poème' and 'Le Poème de l´exstase'.