Chord Distribution Analysis

Chord SymbolCountFrequency
Gm6624.0%
D7b13520.0%
Am7b5312.0%
D7b9312.0%
G7b1328.0%
Cm728.0%
F728.0%
G7b914.0%

Key Patterns Detected

PatternFunctionFrequency
Am7b5 -> D7b9Setup (Minor Key)3
Gm6 -> D7b13Setup (Major Key)2
D7b13 -> Am7b5Resolution (Minor)2
D7b9 -> Gm6Resolution (Minor)2
G7b13 -> Cm7Resolution (Minor)1
Cm7 -> G7b9Setup (Major Key)1
G7b9 -> Cm7Resolution (Minor)1
Cm7 -> F7Setup (Major Key)1
D7b13 -> Gm6Resolution (Minor)1

Harmonic Highlights

  • Tonic Minor Stability: The A sections center on Gm6, utilizing a classic i-V7 alternation (Gm6-D7b13) that establishes a minor-swing aesthetic rather than a G major tonality.
  • Subdominant Pivot: The bridge initiates a shift to the subdominant (Cm7) via G7b9 (V/iv), introducing secondary dominant tension to disrupt the Gm tonic.
  • Relative Major Modulation: A functional ii-V-I sequence (Cm7-F7-Bb6) navigates the harmony toward the relative major (Bb), providing a bright contrast to the dark A sections.
  • Altered Dominant Extensions: Frequent use of D7b13 and D7b9 facilitates smooth chromatic voice-leading into the tonic, emphasizing the harmonic minor pull.

Improvisation Focus G Melodic Minor, utilizing the natural 6th (E) to outline the Gm6 tonic while providing a bridge to the Bb major bridge section.

Difficulty Rating 2 (Intermediate-Beginner) because the piece follows predictable ii-V-I cycles and clear modulations between closely related relative keys.


๐Ÿ“š Standard Available in:

The Real Book - Volume IV
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