CentralNotice From Wikipedia, the free encyclopedia Jump to: navigation , search This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed. (November 2008) ( Learn how and when to remove this template message ) For the Ornette Coleman album see Free Jazz: A Collective Improvisation . Free jazz Stylistic origins Jazz experimental avant-garde Cultural origins 1950s, United States Derivative forms Loft jazz post-rock Fusion genres Progressive rock punk jazz Regional scenes Europe Other topics Avant-garde jazz free improvisation Free jazz is an approach to jazz music that was first developed in the 1950s and 1960s as musicians attempted to alter, extend, or break down jazz convention, often ...