Chord Distribution Analysis

Chord SymbolCountFrequency
Bb7710.0%
Ebmaj768.6%
Eb657.1%
Fm757.1%
Ab7#1145.7%
Ebm745.7%
Abm634.3%
Gbmaj734.3%

Key Patterns Detected

PatternFunctionFrequency
Fm7 -> Bb7Setup (Major Key)3
Ebmaj7 -> Ab7#11Setup (Major Key)2
Ab7#11 -> Ebm7Resolution (Minor)2
Bb7 -> Ebmaj7Resolution (Major)2
Db7 -> Gbmaj7Resolution (Major)2
Eb7 -> Abmaj7Resolution (Major)2
Fm7b5 -> Bb7b9Setup (Minor Key)1
Bb7b9 -> Ebm7Resolution (Minor)1
Dbm7 -> Gb7Setup (Major Key)1
Abm7 -> Db7Setup (Major Key)1
C7 -> Fm7Resolution (Minor)1
Abmaj7 -> Db7Setup (Major Key)1
Cm7b5 -> F7Setup (Minor Key)1
C7#5 -> Fm7Resolution (Minor)1

Harmonic Highlights

  • Extensive use of modal interchange, shifting frequently between the tonic major (Ebmaj7) and parallel minor tonalities (Ebm7 and Abm6).
  • Distinctive IV7 (Ab7#11) movements provide a recurring Lydian Dominant color that avoids traditional subdominant resolutions.
  • Chromatic dominant cycling, such as the Gb7 to B7 to Bb7 sequence, utilizes tritone relationships to delay tonic resolution.
  • Minor ii-V-i cells (Fm7b5 - Bb7b9 - Ebm7) create a sophisticated, darker contrast to the primary Eb major key center.

Improvisation Focus Parallel Key Fluency (navigating the shift between Eb Major and Eb Melodic Minor scales).

Difficulty Rating 4/5: The unusual 64-bar structure and constant oscillation between major and minor modes require advanced harmonic awareness and melodic pacing.


๐Ÿ“š Standard Available in:

The Real Book - Volume III
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