THE JAZZY DEBATES
“There have long been debates in the jazz community over the definition and the boundaries of “jazz.” In the mid-1930s, New Orleans jazz lovers criticized the “innovations” of the swing era as being contrary to the collective improvisation they saw as essential to “true” jazz. Through the 1940s, ’50s and ’60s, traditional jazz enthusiasts and Bop enthusiasts criticized each other, often arguing that the other style was somehow not “real” jazz. Although alteration or transformation of jazz by new influences has often been initially criticized as a “debasement,” Andrew Gilbert argues that jazz has the “ability to absorb and transform influences” from diverse musical styles. Commercially-oriented or ‘popular’ music-influenced forms of jazz have both long been criticized, at least since the emergence of Bop. Traditional jazz enthusiasts have dismissed Bop, the 1970s jazz fusion era [and much else] as a period of commercial debasement of the music. However, according to Bruce Johnson, jazz music has always had a “tension between jazz as a commercial music and an art form.””
Source: http://en.wikipedia.org/wiki/Jazz#Jazz_fusion