Chord Distribution Analysis

Chord SymbolCountFrequency
Cm7512.2%
F7512.2%
Bbmaj737.3%
Gm737.3%
Dm737.3%
G737.3%
Eb737.3%
Fm724.9%

Key Patterns Detected

PatternFunctionFrequency
Cm7 -> F7Setup (Major Key)5
Dm7 -> G7Setup (Major Key)3
G7 -> Cm7Resolution (Minor)3
Bbm7 -> Eb7Setup (Major Key)2
Fm7 -> Bb7Setup (Major Key)1
Bm7 -> E7Setup (Major Key)1
Am7 -> D7Setup (Major Key)1
Abm7 -> Db7Setup (Major Key)1
Gm7 -> C7Setup (Major Key)1
F#m7 -> B7Setup (Major Key)1
F7 -> Bbmaj7Resolution (Major)1

Harmonic Highlights:

  • Establishes Bb major with a foundational I-vi-ii-V progression (Bbmaj7, Gm7, Cm7, F7) before significant departure.
  • Features rapid modulations through a series of ii-V progressions often related by descending major thirds or chromatic steps (e.g., Bm7-E7, Bbm7-Eb7, Am7-D7, Abm7-Db7), reminiscent of “Giant Steps” changes.
  • Employs chains of dominant chords and secondary dominants, leading to temporary tonal centers that shift every one or two bars (e.g., Fm7-Bb7-Eb7, Ab7).
  • High harmonic rhythm demanding precise navigation through complex, non-diatonic chord changes.

Improvisation Focus: Arpeggio outlining for each specific chord.

Difficulty Rating: 5 (Advanced). The tune features extremely fast harmonic rhythm and constantly shifting tonal centers requiring advanced melodic and harmonic understanding.