Arcangelo Corelli
The sonata da chiesa, generally for one or more violins and bass, consisted normally of a slow introduction, a loosely fugued allegro, a slow movement, and a lively finale in some binary form suggesting affinity with the dance-tunes of the suite. This scheme, however, was not very clearly defined, until the works of Arcangelo Corelli when it became the essential sonata and persisted as a tradition of Italian violin music.