Chord Distribution Analysis

Chord SymbolCountFrequency
G6617.6%
Eb7514.7%
A7411.8%
Am7411.8%
D7411.8%
G738.8%
Cmaj725.9%
F7#1125.9%

Key Patterns Detected

PatternFunctionFrequency
Cmaj7 -> F7#11Setup (Major Key)2
Am7 -> D7Setup (Major Key)2
G7 -> Cmaj7Resolution (Major)1

Harmonic Highlights

  • Backdoor dominant resolution: The transition from IVmaj7 (Cmaj7) to bVII7 (F7#11) provides a smooth “backdoor” return to the tonic G6.
  • Chromatic bridge descent: A sequence of descending dominant 7th chords (G7-Gb7-F7-E7) utilizes chromatic voice leading to target the supertonic.
  • Secondary dominant cycling: The inclusion of VI7 (E7) and II7 (A7) reinforces a circle-of-fifths motion, typical of the 32-bar AABA swing structure.
  • Subdominant minor substitute: The Eb7 chord functions as a chromatic approach or tritone substitute to the Am7, adding harmonic tension before the cadence.

Improvisation Focus

Chord Tone Soloing (Arpeggiation) to navigate the frequent secondary dominant shifts.

Difficulty Rating

2/5. The slow harmonic rhythm and predictable structure are accessible for beginners, requiring only basic awareness of non-diatonic dominant chords.


πŸ“š Standard Available in:

The Real Book - Volume II
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