Chord Distribution Analysis

Chord SymbolCountFrequency
D71028.6%
Gmaj7720.0%
Am7720.0%
E7411.4%
G625.7%
Bb0725.7%
B7b925.7%
A712.9%

Key Patterns Detected

PatternFunctionFrequency
Am7 -> D7Setup (Major Key)7
D7 -> Gmaj7Resolution (Major)3
D7 -> Am7Resolution (Minor)1
Gmaj7 -> D7Setup (Major Key)1

Harmonic Highlights

  • Functional diatonicism dominates the structure, primarily utilizing recurring ii-V7-I progressions (Am7 - D7 - Gmaj7) to establish the G major tonal center.
  • The Bb°7 chord functions as a passing diminished chord (#i°7), creating chromatic voice leading into the ii chord (Am7).
  • The progression maintains a traditional “rhythm changes” feel in its turnaround sections, alternating between tonic stability and dominant tension.

Improvisation Focus G Major Bebop Scale, emphasizing the transition between the 3rd and 7th guide tones during the frequent ii-V-I cycles.

Difficulty Rating 2/5 — The predictable harmonic rhythm and lack of modulation make it an accessible entry point for mastering basic swing phrasing and diatonic improvisation.


📚 Standard Available in:

The Real Book - Volume III
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