Jazz
Jazz-rock

Although some jazz purists protested against the blend of jazz and rock, many jazz innovators crossed over from the contemporary hard bop scene into fusion. As well as the electric instruments of rock (such as electric guitar, electric bass, electric piano and synthesizer keyboards), fusion also used the powerful amplification, "fuzz" pedals, wah-wah pedals and other effects that were used by 1970s-era rock bands. Notable performers of jazz fusion included Miles Davis, Eddie Harris, keyboardists Joe Zawinul, Chick Corea, and Herbie Hancock, vibraphonist Gary Burton, drummer Tony Williams, violinist Jean-Luc Ponty, guitarists Larry Coryell, Al Di Meola, John McLaughlin, Ryo Kawasaki, and Frank Zappa, saxophonist Wayne Shorter and bassists Jaco Pastorius and Stanley Clarke. Jazz fusion was also popular in Japan, where the band Casiopea released more than thirty fusion albums.

According to jazz writer Stuart Nicholson, "just as free jazz appeared on the verge of creating a whole new musical language in the 1960s... jazz-rock briefly suggested the promise of doing the same" with albums such as Williams' Emergency! (1970) and Davis' Agharta (1975), which Nicholson said "suggested the potential of evolving into something that might eventually define itself as a wholly independent genre quite apart from the sound and conventions of anything that had gone before." This development was stifled by commercialism, Nicholson said, as the genre "mutated into a peculiar species of jazz-inflected pop music that eventually took up residence on FM radio" at the end of the 1970s.
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