Chord Distribution Analysis

Chord SymbolCountFrequency
Bm7511.6%
E7511.6%
Bbm749.3%
Gm737.0%
F#m724.7%
C724.7%
A7b924.7%
Amaj712.3%

Key Patterns Detected

PatternFunctionFrequency
Bm7 -> E7Setup (Major Key)5
Gm7 -> C7Setup (Major Key)2
E7 -> Amaj7Resolution (Major)1
C7 -> Fmaj7Resolution (Major)1
A7b9 -> Dm7Resolution (Minor)1
Dm7 -> G7Setup (Major Key)1
G7 -> Cm7Resolution (Minor)1
Cm7 -> F7Setup (Major Key)1
Am7b5 -> D7b9Setup (Minor Key)1
D7b9 -> Gm7Resolution (Minor)1
Em7b5 -> A7b9Setup (Minor Key)1
Fm7 -> Bb7Setup (Major Key)1
Cm7b5 -> F7b13Setup (Minor Key)1
F7b13 -> Bbm7b5Resolution (Minor)1
Bbm7b5 -> Eb7#9Setup (Minor Key)1
Eb7#9 -> Abmaj7Resolution (Major)1

  • Harmonic Highlights:

    • Frequent half-step chromatic shifts, notably Bbm7 to Bm7 and F#m7 to Gm7, creating immediate tonal displacement.
    • Descending chromatic sequence of major and dominant 7th chords (Amaj7, Ab7, Gmaj7, Gb7) for smooth voice leading and temporary modulation.
    • Rapid juxtaposition of ii-V progressions that temporarily pivot to new tonal centers, challenging diatonic expectations.
  • Improvisation Focus: Arpeggio navigation with chromatic approach notes to connect rapidly shifting chord tones.

  • Difficulty Rating: 4 (Advanced Intermediate) because of the numerous non-diatonic chords, rapid modulations, and intricate voice leading demanding high harmonic awareness.