Chord Distribution Analysis

Chord SymbolCountFrequency
Dm7612.8%
Em748.5%
Am748.5%
G736.4%
A7b936.4%
G7b936.4%
Cmaj736.4%
Fmaj736.4%

Key Patterns Detected

PatternFunctionFrequency
A7b9 -> Dm7Resolution (Minor)3
Dm7 -> G7b9Setup (Major Key)3
G7b9 -> Cmaj7Resolution (Major)3
Dm7 -> G7Setup (Major Key)2
Em7 -> A7b9Setup (Major Key)2
Gm7 -> C7Setup (Major Key)2
C7 -> Fmaj7Resolution (Major)2
Fmaj7 -> Bb7Setup (Major Key)2
E7b9 -> Am7Resolution (Minor)2
Am7 -> D7Setup (Major Key)2
Em7 -> A7Setup (Major Key)2
Bm7b5 -> E7b9Setup (Minor Key)1
Am7 -> E7b9Setup (Major Key)1
A7 -> Dm7Resolution (Minor)1

1.

Harmonic Highlights

  • Employs a cycling ii-V-iii-VI progression (Dm7-G7-Em7-A7b9), effectively delaying the resolution to Cmaj7 through secondary dominants.
  • Incorporates a tonicization of the IV chord (Gm7-C7 to Fmaj7) followed by a Bb7 backdoor dominant, creating a classic jazz subdominant sequence.
  • Uses a chromatic F#o7 to C/G transition, functioning as a #IV diminished chord that provides a smooth voice-leading bridge to the cadential 6/4 position.

2. Improvisation Focus

Voice leading through ii-V-I cells using the C Major Bebop Scale and applying the Altered Scale on dominant chords with b9 extensions.

3. Difficulty Rating

3/5: While the key center is stable, the frequent secondary dominants and b9 tensions require sophisticated ear-to-hand coordination and harmonic awareness.


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The Real Book - Volume I
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