Chord Distribution Analysis

Chord SymbolCountFrequency
Gm71120.0%
Fmaj71018.2%
C7916.4%
D7b9712.7%
Eb747.3%
D735.5%
Bbm723.6%
Am723.6%

Key Patterns Detected

PatternFunctionFrequency
Gm7 -> C7Setup (Major Key)9
C7 -> Fmaj7Resolution (Major)7
D7b9 -> Gm7Resolution (Minor)6
Bbm7 -> Eb7Setup (Major Key)2
Am7 -> D7b9Setup (Major Key)2
Gm7 -> D7b9#5Setup (Major Key)1
D7b9#5 -> Gm7Resolution (Minor)1
C7 -> Gm7Resolution (Minor)1
Bbmaj7 -> Eb7Setup (Major Key)1
D7 -> Gm7Resolution (Minor)1

Harmonic Highlights

  • Frequent ii-V-I resolutions (Gm7-C7-Fmaj7) firmly anchor the composition in F Major.
  • The Bbm7-Eb7 sequence functions as a “back-door” ii-V (iv-bVII7), providing a subdominant minor flavor before returning to the tonic.
  • Secondary dominants, specifically D7b9 (V/ii), introduce chromaticism and strong directional pull toward the Gm7.
  • Diatonic turnarounds (Am7-D7b9-Gm7-C7) utilize standard cyclic motion to maintain harmonic momentum.

Improvisation Focus Chord tone targeting and voice leading through ii-V-I cells.

Difficulty Rating 2/5; the progression relies on standard functional harmony and predictable resolutions, making it accessible for intermediate players.


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The Real Book - Volume III
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