Chord Distribution Analysis

Chord SymbolCountFrequency
Gmaj7617.1%
G6617.1%
D7617.1%
Am7514.3%
Em738.6%
C0725.7%
E0725.7%
Am1112.9%

Key Patterns Detected

PatternFunctionFrequency
Am7 -> D7Setup (Major Key)5
D7 -> Gmaj7Resolution (Major)4
Am11 -> D7Setup (Major Key)1
Dm7 -> G7Setup (Major Key)1
G7 -> Cmaj7Resolution (Major)1

Harmonic Highlights

  • Diatonic cycling of I-ii-V-I (Gmaj7-Am7-D7) provides a stable tonal center with standard 1930s voice-leading substitutions like G6.
  • Tonicization of the subdominant (IV) via a secondary ii-V progression (Dm7-G7), shifting the tonal focus briefly to C major.
  • Integration of diminished chords (Co7) as chromatic connectors or common-tone substitutions to facilitate smooth transitions back to the G major tonic.

Improvisation Focus G Major Bebop Scale.

Difficulty Rating 2 (Beginner-Intermediate). The predictable diatonic structure and clear functional cadences make it an ideal vehicle for mastering fundamental ii-V-I patterns without complex modulations.


๐Ÿ“š Standard Available in:

The Real Book - Volume III
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