Chord Distribution Analysis

Chord SymbolCountFrequency
Fm/maj7212.5%
Fm6212.5%
Gm9212.5%
C1316.2%
Cm916.2%
F1316.2%
Bbm916.2%
Eb1316.2%

Key Patterns Detected

PatternFunctionFrequency
Gm9 -> C7b13Setup (Major Key)1

Harmonic Highlights

  • Tonic Minor Prolongation: The composition opens with Fm/maj7 to Fm6, establishing a strong F melodic minor foundation rather than a standard natural minor.
  • Sequential II-V Chains: A defining sequence of descending II-V cells (Bbm9-Eb13 to Abm9-Db13 to F#m9-B13) creates rapid, non-diatonic modulations that challenge tonal stability.
  • Subdominant Modulation: The use of Cm9-F13 acts as a ii-V leading to the IV chord (Bbm9), briefly shifting the harmonic center before the chromatic sequence begins.
  • Minor Turnaround: Employs a standard Gm9-C7b13 (ii-V) to facilitate a strong functional return to the F minor tonic.

Improvisation Focus Navigating rapid II-V sequences using digital patterns and smooth voice-leading across shifting tonal centers.

Difficulty Rating 4/5: The high-speed chromatic II-V transitions in the “B” section require advanced harmonic fluency and the ability to transpose melodic ideas instantly.


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The Real Book - Volume I
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