Chord Distribution Analysis

Chord SymbolCountFrequency
Cmaj7819.5%
G7819.5%
F7717.1%
Dm749.8%
C637.3%
C7/Bb24.9%
A724.9%
Ab7b524.9%

Key Patterns Detected

PatternFunctionFrequency
Cmaj7 -> F7Setup (Major Key)7
F7 -> Cmaj7Resolution (Major)4
A7 -> Dm7Resolution (Minor)2
G7 -> Cmaj7Resolution (Major)2
Dm7 -> G7Setup (Major Key)2
Cmaj7 -> G7Setup (Major Key)1

Harmonic Highlights

  • Frequent oscillation between Cmaj7 and F7 (I-IV7) establishes a bluesy, gospel-tinged atmosphere rather than a standard diatonic subdominant movement.
  • The C7/Bb to A7 sequence acts as a secondary dominant chain (V7/IV to VI7), effectively driving the progression toward the Dm7 (ii) chord.
  • Ab7b5 functions as a tritone substitute for D7 (V7/V), providing a smooth chromatic bass descent (Ab to G) into the G7 primary dominant.
  • Parallel dominant movement (F7 to Eb7) introduces subdominant minor colors and blues vocabulary while maintaining a stable C major tonal center.

Improvisation Focus C Major Blues Scale (incorporating the b3 and b7 to navigate the I-IV7 shifts).

Difficulty Rating 2/5. The slow harmonic rhythm and clear ii-V-I resolutions make it approachable for intermediate players, requiring only basic knowledge of secondary dominants.


๐Ÿ“š Standard Available in:

The Real Book - Volume III
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