Jazz-rock, also called fusion, combines jazz improvisation and chord progressions with the rhythms of rock. Generally, it is more electronic than acoustic, featuring synthesizer, electric bass, electric guitar, electronically-processed woodwind and brass instruments, and a great deal of percussion. The rhythm section usually plays a series of syncopated repeated notes to create the groove over which a vocalist and other instrumentalists play the tune, improvised solos, and accompaniment figures.
Well-known fusion musicians are pianist Chick Corea and guitarist Pat Metheny. Successful jazz-rock groups include Weather Report, Chicago, Blood, Sweat, and Tears, and Chase.