Chord Distribution Analysis

Chord SymbolCountFrequency
F71114.9%
Cm7912.2%
Dm768.1%
Bbmaj756.8%
B0745.4%
Bb745.4%
G7#534.1%
G7b9#522.7%

Key Patterns Detected

PatternFunctionFrequency
Cm7 -> F7Setup (Major Key)6
G7b9#5 -> Cm7Resolution (Minor)2
F7 -> Bbmaj7Resolution (Major)2
Fm7 -> Bb7Setup (Major Key)2
G7 -> Cm7Resolution (Minor)2
G7#5 -> Cm7Resolution (Minor)1
Bb7 -> Fm7Resolution (Minor)1
Am7b5 -> D7b9Setup (Minor Key)1
D7b9 -> Gm7Resolution (Minor)1
Bb7 -> Ebmaj7Resolution (Major)1
Dm7 -> G7Setup (Major Key)1
Cm7 -> G7b9Setup (Major Key)1
Cm7 -> G7Setup (Major Key)1
G7b9 -> Cm7Resolution (Minor)1
Cm7 -> F7susSetup (Major Key)1

Harmonic Highlights:

  • Frequent use of diminished chords (B07, C#07, E07) as chromatic passing tones and altered dominant substitutes, creating tension and smooth voice leading.
  • Application of altered dominants like G7b9#5, G7#5, E7b5, and Gb9 (bII7 tritone substitute for C7) for colorful tension and resolution.
  • Classic V7/IV progression (Bb7) leading to its target Ebmaj7, augmented by a tritone substitution (E7b5).
  • The Fm7/C - Gb9 - F7 sequence features a minor iv chord and a bII7 tritone substitution resolving to the dominant.

Improvisation Focus: Arpeggios and guide tone lines to accurately outline the frequent non-diatonic and altered chords.

Difficulty Rating: 4 (Advanced). The frequent chromatic passing diminished chords and altered dominant harmony require an advanced understanding of voice leading and chord-scale application beyond basic diatonicism.