Chord Distribution Analysis

Chord SymbolCountFrequency
C7721.2%
Gm7618.2%
D739.1%
Db739.1%
Am7b526.1%
Bbm726.1%
Eb726.1%
Fm726.1%

Key Patterns Detected

PatternFunctionFrequency
Gm7 -> C7Setup (Major Key)6
C7 -> Gm7Resolution (Minor)3
Am7b5 -> D7Setup (Minor Key)2
Bbm7 -> Eb7Setup (Major Key)2
Eb7 -> Bbm7Resolution (Minor)1
Dm7 -> G7Setup (Major Key)1
C7 -> Fm7Resolution (Minor)1
D7 -> Gm7Resolution (Minor)1
Am7 -> D7Setup (Major Key)1

Harmonic Highlights:

  • The A section features a recurring i-IV (Gm7 to C7) Dorian vamp, providing a modal foundation that deviates from standard functional minor progressions.
  • It utilizes a distinct “side-slipping” modulation, shifting from a ii-V in G minor (Am7b5-D7) directly to a ii-V in Ab major (Bbm7-Eb7).
  • The structure employs a sequence of descending ii-V patterns (Dm7-G7, Gm7-C7, Fm7-Bb7) in the bridge to create harmonic momentum back toward the G minor tonic.

Improvisation Focus: G Dorian scale for the main vamps and voice-leading through shifting ii-V centers.

Difficulty Rating: 3/5. The modal A sections are accessible, but the bridge’s rapid key shifts and parallel ii-V movements require intermediate harmonic awareness.


📚 Standard Available in:

The Real Book - Volume II
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