Chord Distribution Analysis

Chord SymbolCountFrequency
Gm1218.8%
Em7b5812.5%
Am7b5812.5%
D7b9812.5%
Eb7#1146.2%
Bbmaj734.7%
Gm7/F23.1%
Cm723.1%

Key Patterns Detected

PatternFunctionFrequency
Am7b5 -> D7b9Setup (Minor Key)6
D7b9 -> GmResolution (Minor)6
Cm7 -> F7Setup (Major Key)2
F7 -> Bbmaj7Resolution (Major)2
Am7b5 -> D7b9#5Setup (Minor Key)1
D7b9#5 -> GmResolution (Minor)1
Bbmaj7 -> Eb7#11Setup (Major Key)1
Dm7 -> G7Setup (Major Key)1
G7 -> Cm7Resolution (Minor)1
Bbm7 -> Eb7Setup (Major Key)1
Eb7 -> Abmaj7Resolution (Major)1
D7b9 -> Gmaj7Resolution (Major)1
D7 -> GmResolution (Minor)1
Am7b5 -> D7b5#9Setup (Minor Key)1
D7b5#9 -> GmResolution (Minor)1

Harmonic Highlights

  • The progression utilizes a recurring i - viø7 - iiø7 - V7 movement, where the Em7b5 (viø7) provides a Dorian-inflected lift before the standard minor turnaround.
  • The Eb7#11 serves as a dominant-functioning bVI chord, acting as a tritone substitute for the secondary dominant (A7) to lead chromatically into the D7b9.
  • Chromatic diminished passing chords such as E°7 and Bb°7 facilitate smooth voice leading and create tension between established tonal centers.

Improvisation Focus: G Melodic Minor.

Difficulty Rating: 3/5. The fast harmonic rhythm and the necessity of navigating minor ii-V-i turnarounds at typically brisk tempos demand precise linear phrasing.


📚 Standard Available in:

The Real Book - Volume IV
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