Chord Distribution Analysis

Chord SymbolCountFrequency
Fm7822.2%
Bb9sus513.9%
Gm7411.1%
Ebmaj738.3%
F#025.6%
C7#925.6%
Eb6925.6%
Abmaj712.8%

Key Patterns Detected

PatternFunctionFrequency
Gm7 -> C7#9Setup (Major Key)2
C7#9 -> Fm7Resolution (Minor)2
Gm7 -> C7b9Setup (Major Key)1
C7b9 -> Fm7Resolution (Minor)1
Am7b5 -> D7b13Setup (Minor Key)1
D7b13 -> Gm7Resolution (Minor)1
Gm7 -> C7Setup (Major Key)1
Fm7 -> Bb7susSetup (Major Key)1
Bb7sus -> Fm7Resolution (Minor)1

Harmonic Highlights

  • The progression utilizes frequent ii-V-I movements toward the IV chord (Ebmaj7), creating a sense of constant resolution without landing immediately on the tonic.
  • Chromatic passing motion is established through the F#ยฐ7 to Gm7 transition, providing a leading-tone resolution to the relative minor.
  • The bridge employs a minor ii-V-i (Am7b5 - D7b13 - Gm7), shifting tonal gravity and requiring navigation of altered dominant tensions.
  • Modal interchange is introduced via the Abmaj7 (bVII), momentarily pulling the harmony into the Bb Mixolydian or Eb Lydian landscape.

Improvisation Focus Guide-tone targeting to navigate the frequent secondary dominants and their respective altered extensions (b9, #9, b13).

Difficulty Rating 3/5: The moderate tempo allows for melodic expression, but the constant shifting between major and relative minor centers requires intermediate harmonic proficiency.


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The Real Book - Volume III
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