Chord Distribution Analysis

Chord SymbolCountFrequency
Cmaj7412.9%
Bbmaj7412.9%
Cm739.7%
Amaj726.5%
Gmaj726.5%
Bb726.5%
Ebmaj726.5%
Gbmaj726.5%

Key Patterns Detected

PatternFunctionFrequency
Dm7b5 -> G7b9Setup (Minor Key)1
G7b9 -> Cmaj7Resolution (Major)1
Bb7 -> Ebmaj7Resolution (Major)1
Ebmaj7 -> Bb7Setup (Major Key)1

Harmonic Highlights

  • The composition features non-functional movement of Major 7th chords (Amaj7 to Gmaj7), creating a floating, impressionistic quality typical of 1960s post-bop.
  • The sequence of Cmaj7 to Bbmaj7 mirrors the initial whole-step descent, establishing a pattern of shifting tonal centers that avoids traditional dominant-tonic resolutions.
  • Chromatic transitions, such as Dbm7 moving to Dm7b5, provide a bridge into functional ii-V-I cadences in C Major, blending modal exploration with traditional tension and release.

Improvisation Focus Lydian Mode over the shifting Major 7th structures.

Difficulty Rating 3 (Intermediate). The non-standard chord relationships require the ability to navigate rapid shifts in tonal centers and a strong grasp of modal melody construction beyond standard bebop cliches.


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The Real Book - Volume I
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