Chord Distribution Analysis

Chord SymbolCountFrequency
F7720.0%
G7617.1%
Cm7514.3%
Bbmaj7411.4%
Dm725.7%
Bb725.7%
Eb725.7%
Ab725.7%

Key Patterns Detected

PatternFunctionFrequency
Cm7 -> F7Setup (Major Key)5
G7 -> Cm7Resolution (Minor)4
F7 -> Bbmaj7Resolution (Major)3
Dm7 -> G7Setup (Major Key)2

Harmonic Highlights

  • Employs a standard “Rhythm Changes” structure in Bb major, utilizing repetitive I-VI-ii-V cycles to establish a strong tonic-dominant foundation.
  • The bridge (B section) features a sequential cycle of fourths (D7-G7-C7-F7), using dominant 7th chords to drive kinetic energy back to the tonic.
  • Integrates a chromatic sequence (Bb7-Eb7-Ab7) in the A section, providing a “back-door” harmonic variation that diverges from the standard diatonic turnaround.
  • Features a dense harmonic rhythm, typically requiring two chord changes per measure, which demands precise vertical alignment during improvisation.

Improvisation Focus The Bb Major Bebop Scale, emphasizing the addition of a chromatic passing tone between the 5th and 6th degrees to ensure chord tones land on downbeats.

Difficulty Rating 4/5. The relentless tempo and rapid-fire harmonic shifts characteristic of the bebop idiom require advanced technical facility and instantaneous chord-tone recognition.


📚 Standard Available in:

The Real Bebop Book
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