Chord Distribution Analysis

Chord SymbolCountFrequency
Eb6516.1%
C739.7%
Fm739.7%
Bb739.7%
Ab726.5%
Gm7b526.5%
G726.5%
Cm626.5%

Key Patterns Detected

PatternFunctionFrequency
Gm7b5 -> C7Setup (Minor Key)2
C7 -> Fm7Resolution (Minor)2
Fm7 -> Bb7Setup (Major Key)2
Am7 -> D7Setup (Major Key)1
D7 -> Gmb6Resolution (Minor)1
G7 -> Cm6Resolution (Minor)1
Cm7 -> F7Setup (Major Key)1
C7 -> Fm7b5Resolution (Minor)1
Fm7b5 -> C7Setup (Minor Key)1

Harmonic Highlights

  • Employs a blues-inflected I–IV7 (Eb6 to Ab7) opening, establishing a sophisticated subdominant tension typical of West Coast Cool Jazz.
  • Features rapid-fire sequential ii–V progressions (Gm7b5–C7 and Am7–D7) that provide frequent, temporary modulations away from the tonic Eb.
  • Utilizes a cycle of fourths and chromatic voice leading (Cm7–F7–Fm7–Bb7) to navigate the return to the tonic with harmonic fluidity.

Improvisation Focus Guide-tone navigation to bridge the frequent ii–V modulations.

Difficulty Rating 3/5: The moderate tempo is forgiving, but the density of the harmonic shifts demands precise chord-tone targeting and disciplined harmonic awareness.


📚 Standard Available in:

The Real Book - Volume II
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