Chord Distribution Analysis

Chord SymbolCountFrequency
Gm7513.2%
Fmaj7410.5%
Cm7410.5%
Bbmaj7410.5%
Gm7/C410.5%
C737.9%
F7#537.9%
C7sus25.3%

Key Patterns Detected

PatternFunctionFrequency
Gm7 -> C7Setup (Major Key)3
Cm7 -> F7#5Setup (Major Key)3
C7 -> Fmaj7Resolution (Major)2
F7#5 -> Bbmaj7Resolution (Major)2
Gm7/C -> C7susSetup (Major Key)2
C7sus -> Fmaj7#11Resolution (Major)2
F7#5 -> Cm7Resolution (Minor)1
Bbm7 -> Eb7#5Setup (Major Key)1
Eb7#5 -> Bbm7Resolution (Minor)1
C7 -> Gm7Resolution (Minor)1

Harmonic Highlights:

  • Employs a sophisticated ii-V-I framework in F major, utilizing secondary dominants like F7#5 to transition seamlessly to the IV chord (Bbmaj7).
  • Incorporates chromatic tritone substitutions, notably the Cm7 - B7 - Bbmaj7 sequence, providing smooth descending voice leading to the subdominant.
  • Integrates “backdoor” ii-V progressions (Bbm7 - Eb7) that leverage the parallel minor to resolve back to the tonic F major.
  • Utilizes Lydian (Fmaj7#11) and Sus (C7sus) colors to create the dense, orchestral texture characteristic of the “Birth of the Cool” era.
  1. Improvisation Focus: Navigating guide-tone connections through chromatic ii-V-I sequences using the F Major Bebop scale.

  2. Difficulty Rating: 3/5: The moderate tempo is forgiving, but the frequent chromatic substitutions and non-diatonic shifts require an intermediate understanding of functional harmony.