5 in the 1940s a new style that came to be called

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Unformatted text preview: Kendall Hunt Publishers, 2013 there are microtones used within the basic 12- tone Western system, and tonal effects such as growls and wails. Jazz harmony is complex and most jazz musicians (even more so than “classical” musicians) are very knowledgeable about the theoretical structure and principles that guide their particular style. Jazz harmony uses chords that consist of several thirds stacked on top of the basic triad. So for example where folk music, rock and roll, and early Classical music rely primarily on the triad, jazz uses sevenths, ninths, elevenths, and thirteenths as part of its standard harmonic vocabulary. Additionally, jazz musicians have brought back their own form of the earlier ecclesiastical modes (e.g., Dorian, Phyrgian, etc.) to serve as the basis from which many improvised melodies are derived. Texture, Instrumentation and Form Jazz uses both polyphonic and homophonic textures. In the earliest stage of jazz, New Orleans Style jazz, all the musicians improvised melodies simultaneously, creating a polyphonic texture. More typically, however, jazz will feature the ensemble or a soloist playing the principal melody while the remaining instruments provide harmonic accompaniment in a predominantly homophonic texture. The foundation of the jazz ensemble is the rhythm section, which is a sub- group of the main ensemble. The rhythm section consists of piano, string bass, drums, and optional guitar and it provides the rhythmic and harmonic foundation over which the melodic voices improvise. Beyond the rhythm section, the instrumentation varies with the style. Big Band music uses a large ensemble comprised of many different instrumental sections, while Bebop favors a smaller ensemble, such as a quintet of piano, bass, drums, reed instrument, and trumpet. Jazz uses a variety of formal patterns, but there are two forms that are the most common. The first is the form that is used in most popular- song choruses, which consists of 32 bars (measures) in an AABA form that follow any harmonic progression: 32- Bar Song Form A 8 Bars (Measures) A Repeat of the 8 Bars B The “Bridge” consisting of 8 new bars, often in a different but related key A Return to the original 8 Bars A second popular jazz form is the 12- bar blu...
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This document was uploaded on 02/16/2014.

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