Chord Distribution Analysis

Chord SymbolCountFrequency
Fmaj7713.7%
Gm7713.7%
C7713.7%
Abm747.8%
Db747.8%
Gbmaj747.8%
Bbm735.9%
Am735.9%

Key Patterns Detected

PatternFunctionFrequency
Gm7 -> C7Setup (Major Key)7
C7 -> Fmaj7Resolution (Major)6
Abm7 -> Db7Setup (Major Key)4
Db7 -> Gbmaj7Resolution (Major)4
Bbm7 -> Eb7Setup (Major Key)2
Bm7 -> E7Setup (Major Key)1
Am7 -> D7Setup (Major Key)1
D7 -> Gmaj7Resolution (Major)1
Fm7 -> Bb7Setup (Major Key)1
Bb7 -> Ebmaj7Resolution (Major)1

Harmonic Highlights

  • Employs “side-slipping” modulations, shifting the tonal center suddenly from F major to Gb major via functional ii-V sequences.
  • Features sequential ii-V patterns that descend chromatically (Bm7-E7 to Bbm7-Eb7) to navigate back to the primary key.
  • Utilizes a chromatic turnaround (Am7 - Ab7 - Gm7 - C7), where Ab7 acts as a dominant substitute connecting the iii and ii chords.

Improvisation Focus Seamlessly connecting guide tones across rapid, shifting ii-V-I centers.

Difficulty Rating 4/5. The frequent modulations into distantly related keys at a typically fast tempo require advanced harmonic fluency and precise melodic targeting.


๐Ÿ“š Standard Available in:

The Real Book - Volume I
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