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"Charleston" rhythm, simple rhythm commonly used in comping. [1] Play example ⓘ. In jazz, comping (an abbreviation of accompaniment; [2] or possibly from the verb, to "complement") is the chords, rhythms, and countermelodies that keyboard players (piano or organ), guitar players, or drummers use to support a musician's improvised solo or melody lines.
As the chords of a 12-bar blues follow a form, so does the melodic line. The melodic line might just be the melody of the piece or it might also include lyrics. The melody and lyrics frequently follow an AA'B form, meaning one phrase is played then repeated (perhaps with a slight alteration), then something new is played. [14]
In a jazz context, when "blues" or "solo on blues" appears at the start of a solo section, it is an abbreviation for "blues progression"; it instructs the performer to improvise solos over a 12-bar blues progression based on I, IV, and V7 chords. The term "blues" also refers to a style of soloing and playing over this type of progression.
In contrast, in the chord-scale system, a different scale is used for each chord in the progression (for example mixolydian scales on A, E, and D for chords A 7, E 7, and D 7, respectively). [5] Improvisation approaches may be mixed, such as using "the blues approach" for a section of a progression and using the chord-scale system for the rest. [6]
At its most basic, a single version of this blues scale is commonly used over all changes (or chords) in a twelve-bar blues progression. [7] Likewise, in contemporary jazz theory, its use is commonly based upon the key rather than the individual chord. [2] Greenblatt defines two blues scales, the major and the minor.
"All Blues" is a jazz composition by Miles Davis first appearing on the influential 1959 album Kind of Blue. It is a twelve-bar blues in 6 8 ; the chord sequence is that of a basic blues and made up entirely of seventh chords , with a ♭ VI in the turnaround instead of just the usual V chord.
In a jazz band, these chord changes are usually played in the key of B ♭ [7] with various chord substitutions.Here is a typical form for the A section with various common substitutions, including bVII 7 in place of the minor iv chord; the addition of a ii–V progression (Fm 7 –B ♭ 7) that briefly tonicizes the IV chord, E ♭; using iii in place of I in bar 7 (the end of the first A ...
The form and chord progression are based on the standard twelve-bar blues in the key of B minor, with the vocal melody and nearly all of Gilmour's soloing based on the pentatonic and blues scales. [12] Two twelve-bar verses are followed by a twenty-bar instrumental section that features a blues-style tenor saxophone solo played by Dick Parry ...