Coltrane changes

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The Coltrane changes (or Coltrane Matrix) are a substitute harmonic progression popularized by jazz musician John Coltrane on his 1960 album Giant Steps, specifically in his compositions "Giant Steps" and "Countdown", the latter of which is a reharmonized version of Miles Davis's "Tune Up."

The changes serve as a pattern of chord substitutions for the ii-V-I progression (supertonic-dominant-tonic) and are noted for the tonally unusual root movement down by major thirds (as opposed to the usual minor or major seconds, thus the "giant steps").

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[edit] Influences

David Demsey, professor and saxophonist, cites a number of influences leading toward's Coltrane's development of these changes. Miles Davis, who mentored Coltrane in many ways, was in the late 1950s moving toward the modal style of Kind of Blue. In playing that style, Coltrane found it "easy to apply the harmonic ideas I had... I started experimenting because I was striving for more individual development." He also played with pianist Thelonious Monk during this period, whose unusual harmonic and rhythmic innovations contributed greatly to Coltrane's musical development.

Coltrane studied harmony at the Granoff School of Music in Philadelphia, exploring contemporary techniques and theory. He also spent much time studying the Thesaurus of Scale and Melodic Patterns by Nicolas Slonimsky (1947), which additionally served as practice material.

It is also speculated that the bridge of the Rodgers and Hart song "Have You Met Miss Jones?", the only jazz standard to incorporate a major thirds cycle (shown by the *), may have inspired Coltrane's innovation.

  *                       *                     *                     *
| BbM7       | Abm7 Db7 | GbM7     | Em7   A7 | DM7      | Abm7  Db7| GbM7   |Gm7  C7   |

[edit] The major thirds cycle

The standard Western chromatic scale has twelve semitones. When arranged according to the circle of fifths, it looks like this:

Image:Fifths.png

Looking above at the marked chords from "Have You Met Miss Jones?", D-Gb-Bb are spaced a major third apart. On the circle of fifths it appears as an equilateral triangle:

Image:Thirds_cycle.png

By rotating the triangle, all of the thirds cycles can be shown. Note that there are only four unique thirds cycles. This approach can be generalized; different interval cycles will appear as different polygons on the diagram.

[edit] "Tune Up" and "Countdown"

  ii              V          I                     ii         V          I
| Em7      | A7       | DM7      -          | Dm7      | G7       | CM7      -          |

Play this "Tune Up" excerpt chord progression

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These are the first eight bars of the Miles Davis composition "Tune Up." The chord changes are relatively simple, a straightforward application of the ii-V-I progression, which is extremely common in jazz.

  ii         *          *          I          ii         *          *          I
| Em7   F7 | BbM7 Db7 | GbM7  A7 | DM7      | Dm7  Eb7 | AbM7  B7 | EM7   G7 | CM7      |


Play this "Countdown" excerpt chord progression

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Coltrane modified it into "Countdown", which appears to be much more complex. The ii and I remain, but in between are placed the other two chords(*) from the major thirds cycle centered around each I . Preceding each chord from the major thirds cycle is its V chord.

An earlier Coltrane piece, Lazy Bird, also features, in its 'A' section, two tonal centres a major third apart.

[edit] The standard substitution

Although "Giant Steps" and "Countdown" are perhaps the most famous examples, both of these compositions use slight variants of the standard Coltrane changes (The first eight bars of "Giant Steps" use a shortened version that doesn't return to the "I" chord, and in "Countdown" the progression begins on the IIm7 each time.). The standard substitution can be found in the tune "26-2" (a re-harmonization of Charlie Parker's "Confirmation") and on Coltrane's arrangement of the standard "But Not for Me."

[edit] See also

[edit] Further reading

  • Demsey, David (1996). John Coltrane Plays Giant Steps. Milwaukee: Hal Leonard Corp. ISBN 0-7935-6345-3.. 
  • Weiskopf, Walt; Ramon Ricker (1991). Coltrane - A Player's Guide to His Harmony. New Albany, Indiana: Jamey Aebersold. 

[edit] External links