Corelli, Arcangelo, koh REHL ee, ahr KAHN jeh law (1653-1713), was one of the earliest major violinists and composers of violin music. Corelli's compositions became models for both solo and ensemble music for the violin. He developed the concerto grosso, which combines a large instrumental group with a trio that usually consists of two violins and a cello. Corelli also wrote violin sonatas in four movements (sections), which became a standard form for later sonata compositions. Corelli's works were published in six collections. Each of the first five collections consists of 12 sonatas. The sixth is a collection of 12 concerti grossi.