Chord Distribution Analysis

Chord SymbolCountFrequency
Cm7717.1%
Bb6512.2%
F737.3%
B0724.9%
Bb724.9%
Eb624.9%
Dm724.9%
F7#524.9%

Key Patterns Detected

PatternFunctionFrequency
Cm7 -> F7Setup (Major Key)3
Cm7 -> F7#5Setup (Major Key)2
Dm7 -> G7b9Setup (Major Key)1
G7b9 -> Cm7Resolution (Minor)1
Fm7 -> Bb7b9Setup (Major Key)1
Ebm7 -> Ab7Setup (Major Key)1
Cm7 -> F7b9Setup (Major Key)1
G7#5 -> Cm7Resolution (Minor)1

Harmonic Highlights

  • Chromatic passing motion: The Bb6 - Bdim7 - Cm7 sequence utilizes a #Iº7 chord to bridge the tonic and supertonic smoothly.
  • Modal interchange: The Eb6 - Ebm6 - Ab9 progression features the minor iv and a backdoor bVII9, creating a classic “subdominant minor” resolution.
  • Functional cycles: Frequent V/ii (G7b9) to ii (Cm7) movements and standard ii-V cells (Dm7-G7, Cm7-F7) define the structural backbone.

Improvisation Focus Bb Major Bebop Scale (integrating the natural 7th as a passing tone for smooth voice leading).

Difficulty Rating 2/5. The tune follows a predictable AABA structure with standard swing-era resolutions, making it highly accessible for intermediate soloists.


📚 Standard Available in:

The Real Book - Volume V
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