Chord Distribution Analysis

Chord SymbolCountFrequency
Fm7821.6%
Ebmaj7616.2%
Bb7410.8%
Ebmaj7/G38.1%
F#m738.1%
B738.1%
Ebm725.4%
Ab725.4%

Key Patterns Detected

PatternFunctionFrequency
Fm7 -> Bb7Setup (Major Key)4
F#m7 -> B7Setup (Major Key)3
Ebm7 -> Ab7Setup (Major Key)2
Abm7 -> Db7Setup (Major Key)2
Bb7 -> Ebmaj7Resolution (Major)2
Bb7 -> Ebmaj7/GResolution (Major)1

Harmonic Highlights

  • Initial shift from Imaj7 to a ii-V in Db (Ebm7-Ab7) functions as a modal interchange, moving from Eb major to the parallel subdominant minor.
  • Sequential ii-V chains (Abm7-Db7 and F#m7-B7) utilize “back-door” resolutions and chromatic side-slipping to create temporary tension.
  • Rapid turnaround cycles (Fm7-Bb7 to Ebmaj7) alternate with non-diatonic cycles, requiring precise navigation of the ii-V-I cadence in the home key of Eb Major.

Improvisation Focus Mastering guide-tone connections through descending ii-V sequences and navigating the parallel major-to-minor shifts.

Difficulty Rating 3/5; the structure requires proficiency in tracking fast-moving ii-V modulations and managing frequent tonal shifts at typical bebop tempos.


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The Real Book - Volume I
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