Chord Distribution Analysis

Chord SymbolCountFrequency
Eb7612.8%
Abmaj7612.8%
Bbm7510.6%
Dm736.4%
G736.4%
Cm736.4%
C#m736.4%
F#736.4%

Key Patterns Detected

PatternFunctionFrequency
Bbm7 -> Eb7Setup (Major Key)5
Eb7 -> Abmaj7Resolution (Major)5
Dm7 -> G7Setup (Major Key)3
G7 -> Cm7Resolution (Minor)3
C#m7 -> F#7Setup (Major Key)3
F#7 -> Bmaj7Resolution (Major)3
Gm7b5 -> C7Setup (Minor Key)2
C7 -> Fm7Resolution (Minor)2
Bm7 -> E7Setup (Major Key)1

Harmonic Highlights

  • Uses sequential ii-V-I blocks that modulate chromatically, notably the jump from Cm7 to a ii-V-I in B major (C#m7-F#7-Bmaj7).
  • Employs “side-slipping” harmony where tonal centers shift by a half-step to create melodic tension.
  • Returns to the subdominant of the home key via Bbm7-Eb7-Abmaj7, utilizing a rapid cycle of fourths.
  • Features a dense harmonic rhythm where each key center is explored for only one or two measures.
  1. Improvisation Focus Mastering the “cellular” approach to ii-V-I patterns across multiple keys while prioritizing smooth voice leading between shifting centers.

  2. Difficulty Rating 4 (Advanced) because the rapid, non-diatonic key changes require exceptional visualization and the ability to transpose melodic ideas instantly at tempo.