Chord Distribution Analysis

Chord SymbolCountFrequency
Ebmaj7410.5%
Gm7410.5%
C7410.5%
Fm7410.5%
Bb7410.5%
Abm737.9%
Db737.9%
Em725.3%

Key Patterns Detected

PatternFunctionFrequency
Gm7 -> C7Setup (Major Key)4
Fm7 -> Bb7Setup (Major Key)4
Abm7 -> Db7Setup (Major Key)3
C7 -> Fm7Resolution (Minor)3
Em7 -> A7b5Setup (Major Key)2
Bb7 -> Ebmaj7Resolution (Major)2
Am7 -> D7Setup (Major Key)1
D7 -> Gmaj7Resolution (Major)1
C7 -> Fmaj7Resolution (Major)1
Bb7 -> Ebmaj7#11Resolution (Major)1

Harmonic Highlights

  • Employs chromatic “side-slipping” via an Em7-A7b5 sequence that functions as a substituted ii-V leading to the IV chord (Abmaj7).
  • Integrates a “backdoor” ii-V (Abm7-Db7) that resolves into a standard iii-VI-ii-V turnaround in the tonic Eb major.
  • Features rapid sequential modulations that briefly tonicize G major (III) and F major (II) using discrete ii-V-I cells before returning to the home key.

Improvisation Focus Voice leading via guide tones to navigate high-frequency chord changes and shifting tonal centers.

Difficulty Rating 4 (Advanced) — The constant modulations and non-diatonic ii-V patterns require advanced harmonic literacy and rapid transpositional thinking.


📚 Standard Available in:

The Real Book - Volume II
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