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For example, the progression Fmaj7–Amaj7–Dmaj7–Gmaj7–C13sus4 contains four major seventh chords (and one thirteenth chord), none of which are diatonic to the key of F major except the first.
In contrast, the vi–ii–V–I or circle progression from classical theory contains four chords of two or three different qualities: major, minor, and possibly a dominant seventh chord; all of which, however, are diatonic to the key. Thus diversity is achieved within a stable and fixed tonal center.
jazz
Jazz is a music genre that originated in the African-American communities of New Orleans, Louisiana in the late 19th and early 20th centuries, with its roots in blues and ragtime. Since the 1920s Jazz Age, it has been recognized as a majo ...
, a constant structure is a chord progression consisting of three or more chords
Chord may refer to:
* Chord (music), an aggregate of musical pitches sounded simultaneously
** Guitar chord a chord played on a guitar, which has a particular tuning
* Chord (geometry), a line segment joining two points on a curve
* Chord ...
of the same type or quality.Rawlins, Robert (2005). ''Jazzology: The Encyclopedia of Jazz Theory for All Musicians'', p.131. . Popularized by pianists Bill Evans
William John Evans (August 16, 1929 – September 15, 1980) was an American jazz pianist and composer who worked primarily as the leader of his trio. His use of impressionist harmony, interpretation of traditional jazz repertoire, block ch ...
and Herbie Hancock, the combination of functional and nonfunctional chords provides cohesiveness while producing a free and shifting tonal center.
For example, the progression Fmaj7–Amaj7–Dmaj7–Gmaj7–C13sus4 contains four major seventh chords (and one thirteenth chord), none of which are diatonic to the key of F major except the first.
In contrast, the vi–ii–V–I or circle progression from classical theory contains four chords of two or three different qualities: major, minor, and possibly a dominant seventh chord; all of which, however, are diatonic to the key. Thus diversity is achieved within a stable and fixed tonal center.
See also
* Parallel harmony * Side-slippingReferences