Chord Distribution Analysis

Chord SymbolCountFrequency
Cm/maj7635.3%
D7317.6%
G7b13317.6%
Bbm715.9%
Eb715.9%
Abmaj715.9%
Db715.9%
Cm715.9%

Key Patterns Detected

PatternFunctionFrequency
G7b13 -> Cm/maj7Resolution (Major)3
Bbm7 -> Eb7Setup (Major Key)1
Eb7 -> Abmaj7Resolution (Major)1
Abmaj7 -> Db7Setup (Major Key)1

Harmonic Highlights

  • Features a recurring II-V-i in C minor that utilizes a dominant II chord (D7) instead of the traditional half-diminished ii, creating a brighter secondary dominant (V/V) resolution.
  • Incorporates a sudden modulation to Ab major via a Bbm7-Eb7 progression, followed by a Db7 (subV/I) that functions as a chromatic bridge back to the tonic center.
  • Employs the Cm(maj7) as a stable tonic arrival point, establishing a sophisticated, dissonant harmonic palette characteristic of Bill Evans’ Melodic Minor usage.

Improvisation Focus C Melodic Minor scale and its derivative modes (Altered and Lydian Dominant).

Difficulty Rating 4/5 β€” The rapid transition between the C minor tonic and the temporary Ab major center, combined with the specific tensions of minor-major chords, requires advanced harmonic navigation.


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The Real Book - Volume III
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