Chord Distribution Analysis

Chord SymbolCountFrequency
Cm7510.4%
Abmaj7510.4%
Fm748.3%
Bb7sus48.3%
Bb936.2%
Cmaj736.2%
Bb9/Ab36.2%
B0736.2%

Key Patterns Detected

PatternFunctionFrequency
Fm7 -> Bb7susSetup (Major Key)4
Dm7b5 -> G7b9#5Setup (Minor Key)2
G7b9#5 -> Cm7Resolution (Minor)1
G7b9#5 -> Cmaj7Resolution (Major)1

Harmonic Highlights

  • Employs a standard ii-V-I in the relative major (Fm7 - Bb7 - Ebmaj7) to momentarily shift tonal gravity away from the C minor tonic.
  • Utilizes a classic minor ii-V-i (Dm7b5 - G7b9#5 - Cm7) featuring altered dominant tensions to provide dark, sophisticated resolutions.
  • Features a significant modal shift to the parallel major (Cmaj7), creating a poignant “Tierce de Picardie” effect that alters the emotional landscape.
  • The use of Abmaj9 as a bVI chord acts as a subdominant substitute, facilitating smooth voice leading back to the ii-V turnaround.

Improvisation Focus C Melodic Minor and the Eb Major/C Minor relationship.

Difficulty Rating 3 (Intermediate): While the harmonic rhythm is slow, the performer must navigate frequent shifts between the natural minor and parallel major tonalities with lyrical sensitivity.


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The Real Book - Volume V
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