Chord Distribution Analysis

Chord SymbolCountFrequency
A7710.4%
Dmaj7710.4%
Em757.5%
Bm746.0%
D734.5%
F#734.5%
D7#923.0%
Gm723.0%

Key Patterns Detected

PatternFunctionFrequency
Em7 -> A7Setup (Major Key)5
A7 -> Dmaj7Resolution (Major)4
D7#9 -> Gm7Resolution (Minor)2
Am7 -> D7Setup (Major Key)2
Bm7 -> E7Setup (Major Key)2
C#m7 -> F#7Setup (Major Key)2
F#7 -> Bmaj7Resolution (Major)2
Fm7 -> Bb7Setup (Major Key)1
Gm7b5 -> C7b5Setup (Minor Key)1
C7b5 -> Fmaj7Resolution (Major)1
F#m7 -> B7Setup (Major Key)1
F#7 -> Bm7Resolution (Minor)1

Harmonic Highlights

  • Employs rapid modal interchange and tonicization, frequently shifting between D Major and distal keys like B Major and Gb Major via II-V-I chains.
  • The opening $D7^{#9}$ to $Gm7$ creates a dark, chromatic tension by treating the tonic as a V7/iv leading into a subdominant minor context.
  • Features sophisticated “side-slipping” dominant movements and non-functional neighbor chords, such as the $C^{#}7^{#9}$ to $B6/C$ transition.
  • Utilizes a cyclical harmonic structure that relies on deceptive resolutions to navigate through mediant and submediant key centers.

Improvisation Focus The Melodic Minor scale (and its Altered/Lydian Dominant modes) is essential for navigating the dense altered tensions and frequent key modulations.

Difficulty Rating 4 (Advanced). The constant shifting between remote tonal centers and the use of unconventional chromatic resolutions demand high-level harmonic mapping and fluid voice leading.


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The Real Book - Volume I
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