Chord Distribution Analysis

Chord SymbolCountFrequency
C7412.9%
E7b939.7%
G739.7%
Am739.7%
Fmaj726.5%
Bm7b526.5%
Am7b526.5%
D7b926.5%

Key Patterns Detected

PatternFunctionFrequency
Bm7b5 -> E7b9Setup (Minor Key)2
E7b9 -> Am7b5Resolution (Minor)2
Am7b5 -> D7b9Setup (Minor Key)2
Am7 -> D7Setup (Major Key)2
Gm7 -> C7Setup (Major Key)2
F#m7b5 -> B7Setup (Minor Key)1
E7b9 -> Bm7Resolution (Minor)1
Bm7 -> E7Setup (Major Key)1
E7 -> Am7Resolution (Minor)1
D7 -> Gm7Resolution (Minor)1
C7 -> Fmaj7Resolution (Major)1

Harmonic Highlights

  • Frequent minor ii-V-i cells (Bm7b5โ€“E7b9 to Am) establish the tonic minor foundation while maintaining melodic tension.
  • Sequential ii-V chains (Am7b5โ€“D7b9 transitioning to Gm7โ€“C7) drive the harmony toward the subdominant (Fmaj7) via downward-fifth modulations.
  • The bridge utilizes a chromatic shift to the dominant area (F#m7b5โ€“B7 to E7), creating a temporary tonal center before cycling back to the A minor head.

Improvisation Focus

  • Connecting functional ii-V-I patterns across multiple rapidly shifting key centers.

Difficulty Rating

  • 4/5. The dense harmonic rhythm and constant movement between major and minor ii-V sequences require advanced voice-leading and harmonic awareness.

๐Ÿ“š Standard Available in:

The Real Book - Volume V
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