Chord Distribution Analysis

Chord SymbolCountFrequency
Bbm6928.1%
Cm7b5825.0%
F7b9825.0%
Ebm726.2%
Fm7b513.1%
Bb7b913.1%
Em7b513.1%
Ab7b913.1%

Key Patterns Detected

PatternFunctionFrequency
Cm7b5 -> F7b9Setup (Minor Key)8
F7b9 -> Bbm6Resolution (Minor)7
Fm7b5 -> Bb7b9Setup (Minor Key)1
Bb7b9 -> Ebm7Resolution (Minor)1
Ab7b9 -> Dbmaj7Resolution (Major)1

Harmonic Highlights

  • Persistent minor ii-V-I (Cm7b5โ€“F7b9โ€“Bbm6) cadences anchor the piece in Bb minor despite the complex bridge modulations.
  • Sequential modulation in the B section shifts through Eb minor before resolving to the relative major (Db major) via an Em7b5โ€“Ab7b9 sequence.
  • Frequent use of dominant 7b9 chords creates high-tension resolutions typical of the bebop idiom, requiring precise voice leading.

Improvisation Focus Bb Melodic Minor scale (for tonic minor and altered dominant applications).

Difficulty Rating 4/5. Navigating rapid minor-key ii-V-I cycles at a bebop tempo requires advanced harmonic fluency and melodic minor vocabulary.


๐Ÿ“š Standard Available in:

The Real Book - Volume III
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