Chord Distribution Analysis

Chord SymbolCountFrequency
Cm618.8%
Dm7b5515.6%
G7b9515.6%
Ab7515.6%
G7412.5%
C7b926.2%
Fm726.2%
Cmaj726.2%

Key Patterns Detected

PatternFunctionFrequency
Dm7b5 -> G7b9Setup (Minor Key)5
G7b9 -> CmResolution (Minor)4
C7b9 -> Fm7Resolution (Minor)2
G7b9 -> Cmaj7Resolution (Major)1
G7 -> CmResolution (Minor)1

Harmonic Highlights

  • Frequent use of minor ii-V-i progressions (Dm7b5โ€“G7b9โ€“Cm) establishes the somber C minor tonality.
  • A secondary dominant (C7b9) facilitates a smooth transition to the subdominant chord (Fm7).
  • The bridge features persistent Ab7 to G7 (bVI7 to V7) oscillation, creating heavy chromatic tension and Phrygian dominant textures.
  • Brief modulation to the parallel major (Cmaj7) provides a momentary modal lift before reverting to minor.

Improvisation Focus C Harmonic Minor, specifically targeting the b6 and major 7th intervals to navigate the minor ii-V-i cadences.

Difficulty Rating 3/5 (Intermediate); success requires fluidly navigating minor-key cadences and the bridge’s rapid chromatic dominant shifts.


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The Real Book - Volume VI
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