Chord Distribution Analysis

Chord SymbolCountFrequency
Dm71120.4%
G7814.8%
Am7713.0%
Cmaj7611.1%
Em747.4%
A7#923.7%
Bm7b523.7%
E7b923.7%

Key Patterns Detected

PatternFunctionFrequency
Dm7 -> G7Setup (Major Key)7
G7 -> Cmaj7Resolution (Major)5
Em7 -> A7#9Setup (Major Key)2
A7#9 -> Dm7Resolution (Minor)2
Bm7b5 -> E7b9Setup (Minor Key)2
E7b9 -> Am7Resolution (Minor)2
Em7 -> A7Setup (Major Key)2
F#m7b5 -> B7b9Setup (Minor Key)1
B7b9 -> Em7Resolution (Minor)1
Am7 -> D7Setup (Major Key)1
Gm7b5 -> C7b9Setup (Minor Key)1
C7b9 -> Fmaj7Resolution (Major)1
Fmaj7 -> Bb7Setup (Major Key)1
A7 -> Dm7Resolution (Minor)1

Harmonic Highlights

  • Employs a standard I-vi-ii-V turnaround (Cmaj7-Am7-Dm7-G7) to establish the primary tonal center of C major.
  • Utilizes a secondary dominant (A7#9) to create a strong pull toward the ii chord (Dm7), enhancing the diatonic progression.
  • Features a minor ii-V (Bm7b5-E7b9) that tonicizes the relative minor (Am7), providing a brief modal shift.
  • Uses the Ab7 chord as a tritone substitution (subV/V) to provide a chromatic approach to the dominant G7.

Improvisation Focus C Major Bebop Scale.

Difficulty Rating 2/5. The progression relies on functional, predictable diatonic movements and standard secondary dominants, making it highly accessible for intermediate improvisers.


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The Real Book - Volume I
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