Chord Distribution Analysis

Chord SymbolCountFrequency
Cm7721.9%
F7515.6%
G7b9412.5%
Ebmaj739.4%
Bbmaj726.2%
D7#526.2%
Dm726.2%
C#0726.2%

Key Patterns Detected

PatternFunctionFrequency
Cm7 -> F7Setup (Major Key)5
G7b9 -> Cm7Resolution (Minor)4
Cm7 -> G7b9Setup (Major Key)2
F7 -> Bbmaj7Resolution (Major)1
Fm7 -> Bb7Setup (Major Key)1
Bb7 -> Ebmaj7Resolution (Major)1
G7 -> Cm7Resolution (Minor)1

Harmonic Highlights

  • Prominent use of the bVIImaj7 (Bbmaj7) and its secondary dominant F7 (V/bVII), creating a strong modal interchange feel.
  • The D7#5 (V/G) functions as a colorful secondary dominant, building tension before the tonic’s dominant G7b9.
  • The C#07 operates as a chromatic passing diminished, creating tension and resolving chromatically to Cm7 (C#07 to Cm7 shares G and Bb).

Improvisation Focus C Harmonic Minor Scale.

Difficulty Rating 3 (Intermediate). The frequent use of secondary dominants, altered V7 chords, and chromatic diminished chords requires a solid understanding of minor key harmony and voice leading.