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

  • Utilizes the “Rhythm Changes” blueprint in Bb Major, characterized by rapid I-VI-ii-V turnarounds (Bbmaj7-G7-Cm7-F7).
  • The bridge follows a classic diatonic cycle of dominant 7th chords (D7-G7-C7-F7), moving through the circle of fourths to resolve back to the tonic.
  • Incorporates a iii-VI-ii-V substitution (Dm7-G7-Cm7-F7) to provide harmonic variety within the A sections.
  • Features rapid-fire chromatic secondary dominants and subdominant modulations common in high-tempo hard bop vocabulary.

Improvisation Focus Navigating “Rhythm Changes” templates through the use of bebop scales and digital patterns over fast-moving ii-V-I cells.

Difficulty Rating 4/5; The brisk typical performance tempo and constant harmonic shifts demand exceptional technical facility and a deep internal mapping of the cycle of fourths.


📚 Standard Available in:

The Real Book - Volume II
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