Orchestral jazz

Orchestral jazz is a jazz genre that developed in New York City in the 1920s. Early innovators of the genre, such as Fletcher Henderson and Duke Ellington, include some of the most highly regarded musicians, composers, and arrangers in all of jazz history. The fusion of jazz's rhythmic and instrumental characteristics with the scale and structure of an orchestra, made orchestral jazz distinct from the musical genres that preceded its emergence. Its development contributed both to the popularization of jazz, as well as the critical legitimization of jazz as an art form.

Orchestral jazz developed from early New Orleans jazz. The African-American musicians who pioneered the genre prior to 1920, and who migrated from New Orleans to Chicago and New York in the early 1920s, brought jazz north; in time, the African-American neighborhood of Harlem became the genre's cultural center.

In New York, the entertainment and arts industries thrived and jazz found a fitting home, becoming an important part of the cultural landscape. But before the widespread popularity of big bands, which developed in tandem with the growing dance craze, jazz was generally regarded as a rather crude variety of music. It was not widely listened to for its artistic value, as music critic Richard Hadlock writes:

A movement emerged during the 1920s, however, indebted in part to Paul Whiteman's musical influence. This movement led to the more stylized, and more formal variety of jazz that would become orchestral jazz, imagined first by Whiteman as symphonic jazz.

This stylization of jazz had elements of classical European composing, coupled with the rhythmic and instrumental sound of New Orleans jazz. Orchestral jazz was musically distinct from its southern predecessor for a variety of reasons: not only were the bands bigger, creating a certain richness of sound, but also the music was structurally more sophisticated. While New Orleans jazz was characterized by collective improvisation and the spontaneous reinterpretation of standard tunes, jazz orchestras played head arrangements that were composed and arranged prior to the performance in which they were executed. The busy, raucous style of early jazz did not hold the same kind of popular appeal that the comparative restraint of orchestral jazz did. In particular, the implementation of measured rhythm accounted for much of its popular appeal. The two-beat groove reminiscent of New Orleans jazz was replaced during the transition into the swing era by the bass innovations of Wellman Braud. His use of the "walking style" of bass made the four beats to the bar a jazz standard; furthermore, this rhythm was conducive to the kind of dancing audiences desired.

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