Chord Distribution Analysis

Chord SymbolCountFrequency
Am7714.6%
D7714.6%
Gmaj7510.4%
Bb748.3%
Ebmaj736.2%
Em736.2%
Gm24.2%
Gm/maj7/F#24.2%

Key Patterns Detected

PatternFunctionFrequency
Am7 -> D7Setup (Major Key)7
D7 -> Gmaj7Resolution (Major)3
Fm6 -> Bb7Setup (Major Key)2
Bb7 -> Ebmaj7Resolution (Major)2
Dm7 -> G7Setup (Major Key)2
G7 -> Cm7Resolution (Minor)1
Cm7 -> F7Setup (Major Key)1
F7 -> Bbmaj7Resolution (Major)1
D7 -> GmResolution (Minor)1
G7 -> Cmaj7Resolution (Major)1
Em7 -> A7Setup (Major Key)1

Harmonic Highlights

  • Features immediate modal interchange, shifting from the G major tonic to chords borrowed from the parallel G minor scale (Gm, Ebmaj7, Abmaj7) to create its signature melancholic “rainy” atmosphere.
  • Employs a sequence of “side-slipping” II-V progressions, moving from Dm7–G7 down to Cm7–F7, which necessitates navigating rapidly changing tonal centers outside the home key.
  • Utilizes the bIII to bVI relationship (Ebmaj7 to Abmaj7), a common jazz device that provides a lush, non-diatonic expansion of the subdominant function.
  • Incorporates a chromatic line-clichĂ© (Gm–Gmaj7/F#) in some arrangements, emphasizing smooth internal voice leading over static root notes.

Improvisation Focus

Guide Tone Voice Leading: Prioritize connecting the 3rds and 7ths of each chord to smoothly navigate the frequent modulations and chromatic shifts between major and minor tonalities.

Difficulty Rating

3/5: While usually performed as a slow ballad, the constant shifts between distantly related keys and modal borrowing require a sophisticated harmonic ear to maintain melodic continuity.


📚 Standard Available in:

The Real Book - Volume I
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