Chord Distribution Analysis

Chord SymbolCountFrequency
Fm7616.7%
Gm7513.9%
Bb7513.9%
Cm738.3%
C7b938.3%
Ebmaj725.6%
Ab7#1125.6%
Am7b525.6%

Key Patterns Detected

PatternFunctionFrequency
Fm7 -> Bb7Setup (Major Key)4
C7b9 -> Fm7Resolution (Minor)3
Ebmaj7 -> Ab7#11Setup (Major Key)2
Am7b5 -> D7b9Setup (Minor Key)2
D7b9 -> Gm7Resolution (Minor)2
Gm7 -> C7b9Setup (Major Key)2
Fm7 -> C7b9Setup (Major Key)1
Bb7 -> Ebmaj7Resolution (Major)1

Harmonic Highlights

  • The use of Ab7#11 serves as a IV7 (Lydian Dominant), providing a sophisticated non-diatonic color that resolves back to the tonic or moves to the iii chord.
  • Standard iii-vi-ii-V cycles (Gm7-Cm7-Fm7-Bb7) provide the structural foundation, typical of the Great American Songbook style.
  • A secondary ii-V-i sequence (Am7b5-D7b9-Gm7) briefly shifts the tonal center to the mediant, adding minor-key gravity.
  • Recurring V/ii chords (C7b9) create melodic tension that resolves smoothly into the ii-V-I cadence.

Improvisation Focus Eb Major scale fluency with a focus on using the Ab Lydian Dominant scale to highlight the #11 over the IV7 chord.

Difficulty Rating 2/5: The progression relies on standard functional movements and predictable secondary dominants, making it highly accessible for intermediate improvisers.


๐Ÿ“š Standard Available in:

The Real Book - Volume III
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