Chord Distribution Analysis

Chord SymbolCountFrequency
Dm6513.9%
Fm7411.1%
Bb738.3%
Ebmaj738.3%
A7b938.3%
Eb738.3%
Cm725.6%
Bbmaj725.6%

Key Patterns Detected

PatternFunctionFrequency
Bb7 -> Ebmaj7Resolution (Major)3
A7b9 -> Dm6Resolution (Minor)2
Gm7 -> C7Setup (Major Key)2
C7 -> Fm7Resolution (Minor)2
Fm7 -> Bb7Setup (Major Key)2
Em7b5 -> A7b9Setup (Minor Key)1
Cm7 -> F7#5Setup (Major Key)1
F7#5 -> Bbmaj7Resolution (Major)1
Cm7 -> F7Setup (Major Key)1
F7 -> Bbmaj7Resolution (Major)1
A7b13 -> Dm6Resolution (Minor)1

Harmonic Highlights

  • Employs modal interchange and non-functional movement, specifically the shift from Fm7 (v7) to Gbmaj7 (bVImaj7), creating a characteristic “Shorter” dark-to-bright tension.
  • Utilizes secondary ii-V-i sequences (Em7b5 - A7b9 - Dm6) to pivot the tonal center toward the iii chord, momentarily destabilizing the Bb major tonic.
  • Features chromatic “side-slipping” and deceptive resolutions, such as the move from Eb7 to Dm6, which bypasses traditional V-I functional harmony.

Improvisation Focus Navigating the Minor ii-V-i resolutions while maintaining melodic continuity through the rapid tonal shifts.

Difficulty Rating 4/5. The irregular 14-bar phrase structure and frequent chromatic modulations require advanced harmonic awareness and rhythmic discipline.


📚 Standard Available in:

The Real Book - Volume I
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