Chord Distribution Analysis

Chord SymbolCountFrequency
Bb7617.1%
Ebmaj7514.3%
Abm6411.4%
Fm7b538.6%
Fm738.6%
C738.6%
Gm725.7%
Eb625.7%

Key Patterns Detected

PatternFunctionFrequency
Fm7b5 -> Bb7Setup (Minor Key)3
Fm7 -> Bb7Setup (Major Key)3
C7 -> Fm7Resolution (Minor)2
Gm7 -> C7Setup (Major Key)2
Bb7 -> Ebmaj7Resolution (Major)1
Am7b5 -> D7b9Setup (Minor Key)1
D7b9 -> Gm7Resolution (Minor)1

Harmonic Highlights

  • The recurring Abm6 (iv6) introduces prominent modal interchange, coloring the Eb Major tonality with the dark sentiment of the parallel minor.
  • Frequent minor ii-V sequences (Fm7b5 - Bb7) resolve to Major I chords, creating a sophisticated “push-pull” between minor tension and major resolution.
  • A chromatic dominant chain (D7 - Db7 - C7) functions as a series of secondary and tritone substitutions, providing smooth voice-leading toward the final turnaround.
  • The use of Gb°7 as a passing diminished chord between the I and ii chords facilitates a classic internal chromatic ascent.

Improvisation Focus The Eb Melodic Minor scale over the Abm6 chords to emphasize the major 6th and major 7th tensions.

Difficulty Rating 3/5; the constant oscillation between major and minor modes requires intermediate navigations of non-diatonic tones within a standard A-B-A-C structure.


📚 Standard Available in:

The Real Book - Volume I
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