Chord Distribution Analysis

Chord SymbolCountFrequency
F7720.0%
G7617.1%
Cm7514.3%
Bbmaj725.7%
Dm725.7%
Fm725.7%
Bb725.7%
Eb725.7%

Key Patterns Detected

PatternFunctionFrequency
Cm7 -> F7Setup (Major Key)5
G7 -> Cm7Resolution (Minor)4
Dm7 -> G7Setup (Major Key)2
Fm7 -> Bb7Setup (Major Key)2
F7 -> Bbmaj7Resolution (Major)1

Harmonic Highlights

  • Employs “Rhythm Changes” in Bb Major, utilizing a recurring I-vi-ii-V cell (Bbmaj7-G7-Cm7-F7) as the primary harmonic engine for the A section.
  • Features a bridge consisting of a cycle of dominant fourths (D7-G7-C7-F7), requiring the soloist to navigate rapid shifts in tonal centers.
  • Incorporates a subdominant modulation via a ii-V (Fm7-Bb7) to reach the IV chord (Eb7), a hallmark of advanced bebop reharmonization.

Improvisation Focus Navigating the cycle of fourths using dominant bebop scales and 3-7 voice-leading transitions.

Difficulty Rating 5/5. The breakneck tempo combined with dense, rapid-fire harmonic substitutions requires mastery of bebop vocabulary and exceptional technical facility.