Chord Distribution Analysis

Chord SymbolCountFrequency
Bb7616.7%
Abmaj7513.9%
F7411.1%
Bbm7411.1%
Eb7411.1%
C7b938.3%
Fm38.3%
Ebm712.8%

Key Patterns Detected

PatternFunctionFrequency
Bbm7 -> Eb7Setup (Major Key)4
Eb7 -> Abmaj7Resolution (Major)3
C7b9 -> FmResolution (Minor)3
Fm -> C7b9Setup (Major Key)2
Ebm7 -> Ab7Setup (Major Key)1
Ab7 -> Dbmaj7Resolution (Major)1
Dbmaj7 -> Gb7Setup (Major Key)1
Gm7b5 -> C7b9Setup (Minor Key)1
Cm7 -> F7Setup (Major Key)1
F7 -> Bbm7Resolution (Minor)1

Harmonic Highlights

  • Utilizes a VI7-II7-ii7-V7 sequence (F7-Bb7-Bbm7-Eb7), extending the cycle of fifths to delay resolution to the Abmaj7 tonic.
  • Employs a secondary ii-V progression (Ebm7-Ab7) to briefly tonicize the IV chord (Dbmaj7), adding subdominant variety.
  • Incorporates a bVII7 (Gb7) “backdoor dominant” to provide a chromatic, non-diatonic approach back to the tonic.

Improvisation Focus Target-tone bebop phrasing, specifically focusing on the chromatic enclosure of 3rds and 7ths to navigate the rapid secondary dominant changes.

Difficulty Rating 5/5: The high performance tempo combined with relentless cycling through secondary dominants requires advanced technical facility and sophisticated harmonic mapping.


📚 Standard Available in:

The Real Book - Volume I
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