Chord Distribution Analysis

Chord SymbolCountFrequency
C6520.0%
A7416.0%
G7416.0%
D728.0%
F628.0%
F#0714.0%
Cmaj714.0%
C714.0%

Key Patterns Detected

PatternFunctionFrequency
F#m7b5 -> B7b9Setup (Minor Key)1
B7b9 -> Em7Resolution (Minor)1
Dm7 -> G7Setup (Major Key)1

Harmonic Highlights

  • Utilizes a prominent chain of secondary dominants (I–V7/ii–V7/V–V7) in the A section, specifically C6–A7–D7–G7, creating a classic circular swing motion.
  • The bridge features a common IV–#IVo7–I progression (F6–F#o7–Cmaj7), utilizing the diminished chord as a chromatic passing tone to the tonic.
  • Employs a chromatic turnaround in the second half of the A section: iii (Em7) to biiiº7 (Ebo7) to ii (Dm7), providing smooth voice leading.
  • Integrates a ii–V–I in the relative minor (F#m7b5–B7b9–Em7) during the bridge to briefly shift tonal weight before returning to C major.

Improvisation Focus C Major Blues scale combined with chord-tone targeting of the secondary dominants (A7 and D7).

Difficulty Rating 2/5: The predictable swing-era harmonic rhythm and standard secondary dominants make it highly accessible for intermediate improvisers.


📚 Standard Available in:

The Real Book - Volume I
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