Chord Distribution Analysis

Chord SymbolCountFrequency
Gm7616.7%
Fmaj7513.9%
C738.3%
Ab738.3%
Gb738.3%
Bm7b525.6%
E7b925.6%
Am725.6%

Key Patterns Detected

PatternFunctionFrequency
C7 -> Fmaj7Resolution (Major)3
Gm7 -> C7Setup (Major Key)2
Bm7b5 -> E7b9Setup (Minor Key)2
E7b9 -> Am7Resolution (Minor)2
Am7b5 -> D7b9Setup (Minor Key)2
Cm7 -> F7Setup (Major Key)1
F7 -> Bbmaj7Resolution (Major)1
D7b9 -> Gm7Resolution (Minor)1
Ab7 -> Dbmaj7Resolution (Major)1
Dbmaj7 -> Gb7Setup (Major Key)1

Harmonic Highlights:

  • Frequent minor ii-V-i progressions (e.g., Bm7b5-E7b9-Am7, Am7b5-D7b9-Gm7) create strong temporary resolutions beyond the tonic.
  • Extensive chromaticism driven by non-diatonic dominants (Ab7, Gb7) and altered dominants (E7b9, D7b9), employing tritone substitution principles.
  • Clear tonicization to Bb major (the IV chord) via a strong Cm7-F7-Bbmaj7 ii-V-I progression.

Improvisation Focus: Altered Scale (Super Locrian)

Difficulty Rating: 5 (Advanced) โ€“ The rapid, complex harmonic rhythm, frequent modulations, and extensive use of altered and non-diatonic dominants demand sophisticated improvisation skills.