Chord Distribution Analysis

Chord SymbolCountFrequency
Cm7415.4%
Cm6311.5%
Fm311.5%
Dm7/C27.7%
Em27.7%
Ebmaj7/C13.8%
Fm713.8%
Fm613.8%

Key Patterns Detected

PatternFunctionFrequency
C7/E -> FmResolution (Minor)1
Cm -> G7Setup (Major Key)1

Harmonic Highlights

  • The structure is an expanded 16-bar minor blues, extending the traditional 12-bar form through a lengthened subdominant and turnaround section.
  • The opening employs a C minor pedal with shifting upper structures (Cm7, Dm7, Ebmaj7), establishing a modal Dorian foundation.
  • A chromatic sequence (Dm up to F#m) serves as a non-functional bridge, using parallel planing instead of standard cycle-of-fifths resolutions.
  • Frequent alternation between m7 and m6 chords implies C Melodic Minor, adding harmonic color via the major 6th interval.

Improvisation Focus C Dorian scale fluency combined with chromatic side-stepping to navigate the parallel minor chord sequence.

Difficulty Rating 3/5. While the slow tempo is accessible, the 16-bar form and non-functional chromaticism require more harmonic precision than a standard blues.


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The Real Book - Volume I
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