Chord Distribution Analysis

Chord SymbolCountFrequency
F7sus832.0%
Bb7b13sus832.0%
Ebm11/Bb624.0%
C7#928.0%
Db/B14.0%

Key Patterns Detected

PatternFunctionFrequency
Bb7b13sus -> Ebm11/BbResolution (Minor)1

Harmonic Highlights

  • Utilizes dominant 7th “sus” structures to bypass traditional functional harmony, favoring quartal stacking over tertian resolution.
  • Employs a persistent Bb pedal point across much of the form, generating harmonic tension through upper-structure shifts rather than standard root motion.
  • Features a modal shift to Ebm11/Bb, contrasting the preceding Mixolydian-based colors with a darker Dorian texture while maintaining the bass drone.

Improvisation Focus Pentatonic Shifting (intervallic movement across Bb, F, and Ab pentatonic/blues scales).

Difficulty Rating 4/5; the lack of functional cadences requires advanced rhythmic intensity and a sophisticated intervallic vocabulary to sustain melodic interest over static modal structures.


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The Real Book - Volume I
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