Chord Distribution Analysis

Chord SymbolCountFrequency
Cm7418.2%
Em729.1%
Gm729.1%
Bbmaj729.1%
Am729.1%
F#m7b529.1%
Fm729.1%
B7#929.1%

Key Patterns Detected

PatternFunctionFrequency
Bm7b5 -> E7#9Setup (Minor Key)1
E7#9 -> Am7Resolution (Minor)1

Harmonic Highlights

  • Successive minor 7th chords moving in minor thirds (Em7 to Gm7) create a modal, floating quality that avoids immediate functional resolution.
  • A secondary minor ii-V-i (Bm7b5 - E7#9 - Am7) introduces a temporary modulation to A minor, adding harmonic tension.
  • The transition from F#m7b5 to Fm7 utilizes chromaticism to bridge the gap between the A minor sub-section and the C minor tonic.
  • The B7#9 acts as an altered dominant turnaround, providing a high-tension V-i resolution back to the Cm7 home key.

Improvisation Focus Modal shifting between Dorian scales (E, G, and C) and the Altered scale on dominant chords.

Difficulty Rating 4/5: The rapid modulation between distant tonal centers and the non-functional root movements demand advanced harmonic visualization and quick scale switching.


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The Real Book - Volume I
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