Chord Distribution Analysis

Chord SymbolCountFrequency
Cm739.1%
Gm739.1%
Fm739.1%
Ebmaj726.1%
Cm7/Bb26.1%
Am7b526.1%
D7b926.1%
Eb726.1%

Key Patterns Detected

PatternFunctionFrequency
Am7b5 -> D7b9Setup (Minor Key)2
D7b9 -> Gm7Resolution (Minor)2
Eb7 -> Abmaj7Resolution (Major)2
Abmaj7 -> Db7Setup (Major Key)2
G7b9 -> Cm7Resolution (Minor)2
Fm7 -> Bb7Setup (Major Key)2
G7b9/D -> Cm7Resolution (Minor)1
Cm7 -> F7Setup (Major Key)1
Dm7b5 -> G7b9Setup (Minor Key)1

Harmonic Highlights

  • Employs secondary dominants (G7b9/D and D7b9) to create strong resolutions to the relative minor (Cm) and the iii chord (Gm).
  • Utilizes a “backdoor” cadence (Abmaj7 to Db7 to Ebmaj7), where the bVII7 chord provides a smooth chromatic transition back to the tonic.
  • Features frequent minor ii-V-i sequences that integrate diminished chords (Eb°7) as passing tones or chromatic embellishments to the primary Eb major harmony.

Improvisation Focus The C Melodic Minor scale and its associated modes (such as G Altered) to bridge the shifts between C minor and the Eb major tonic.

Difficulty Rating 3/5; the progression requires navigating rapid tonicization and non-diatonic substitutions like the backdoor dominant while maintaining a lyrical flow.


📚 Standard Available in:

The Real Book - Volume IV
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