Horn rock

Jazz fusion
Stylistic origins	Jazz rock bebop blues psychedelia funk 20th-century classical
Cultural origins	Late 1960s, United States
Typical instruments	Electric guitar piano electric piano Drum kit saxophone trumpet electronic keyboard bass guitar synthesizer singing
Derivative forms	Smooth jazz acid jazz punk jazz jazz metal progressive rock krautrock
Other topics
List of jazz fusion musicians

Jazz rock
Stylistic origins	Jazz rock jazz fusion
Cultural origins	Late 1960s, United States
Typical instruments	Electric guitar piano electric piano drums saxophone trumpet electronic keyboards bass guitar vocals
Derivative forms	Jam band punk jazz jazz metal progressive rock krautrock
Other topics
Jam band jazz pop

Jazz fusion (also known as jazz-rock) is a musical genre that developed in the late 1960s when musicians combined aspects of jazz harmony and improvisation with styles such as funk, rock, rhythm and blues, and Latin jazz. During this time many jazz musicians began experimenting with electric instruments and amplified sound for the first time, as well as electronic effects and synthesizers. Many of the developments during the late 1960s and early 1970s have since become established elements of jazz fusion musical practice.

Fusion arrangements vary in complexity—some employ groove-based vamps fixed to a single key, or even a single chord, with a simple melodic motif (a lick). Others can feature odd or shifting time signatures with elaborate chord progressions, melodies, and counter-melodies. Typically, these arrangements, whether simple or complex, will feature extended improvised sections that can vary in length. As with jazz, fusion often employs brass and woodwind instruments such as trumpet and saxophone as melody and soloing instruments but other instruments often substitute for these. The rhythm section typically consists of electric bass (in some cases fretless), electric guitar, electric piano/synthesizer (in contrast to the double bass and piano used in earlier jazz) and drums. As with traditional jazz improvisation, fusion instrumentalists generally require a high level of technical proficiency.

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Wikipedia