Chord Distribution Analysis

Chord SymbolCountFrequency
Am7310.7%
D7310.7%
Gm7310.7%
Ebmaj727.1%
C727.1%
Fm727.1%
Bb727.1%
Gmaj727.1%

Key Patterns Detected

PatternFunctionFrequency
Am7 -> D7Setup (Major Key)3
Gm7 -> C7Setup (Major Key)2
Fm7 -> Bb7Setup (Major Key)2
Abm7 -> Db7Setup (Major Key)1
F#m7 -> B7Setup (Major Key)1
D7 -> Gmaj7Resolution (Major)1
Cm7 -> F7Setup (Major Key)1
C7 -> Fm7Resolution (Minor)1

Harmonic Highlights

  • The ‘A’ sections utilize descending chromatic ii-V sequences (Am7-D7 to Abm7-Db7), creating a sense of constant modulation that shifts away from the G minor tonic.
  • The initial Ebmaj7 serves as a bVI chord, providing a modal anchor before the harmony enters a series of non-functional, side-slipping dominant cycles.
  • The bridge employs a functional I-vi-ii-V cycle in the parallel G Major, offering a stable diatonic contrast to the highly chromatic and unstable nature of the primary theme.

Improvisation Focus Voice leading through guide-tone cells (3rds and 7ths) to maintain melodic continuity across rapid half-step shifts.

Difficulty Rating 4: The relentless chromatic modulations and high-speed harmonic rhythm require advanced visualization of shifting tonal centers and precise voice leading.


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The Real Book - Volume II
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