Chord Distribution Analysis

Chord SymbolCountFrequency
C638.8%
Dm738.8%
Am738.8%
G738.8%
C25.9%
Caug25.9%
C725.9%
Em7b525.9%

Key Patterns Detected

PatternFunctionFrequency
Em7b5 -> A7#9Setup (Minor Key)2
Dm7 -> G7Setup (Major Key)2
Dm7 -> A7b13Setup (Major Key)1
A7b13 -> Em7b5Resolution (Minor)1
Dm7/G -> G7Setup (Major Key)1
C7 -> Fmaj7Resolution (Major)1
E7b9 -> Am7Resolution (Minor)1
Am7 -> D7Setup (Major Key)1

Harmonic Highlights

  • The C – Caug – C6 sequence utilizes a chromatic inner-voice (G–G#–A) to drive the initial tonic movement.
  • A chromatic line cliché over the submediant (Am – Am(maj7)/G# – Am7/G) provides smooth melodic movement within a functional minor structure.
  • Altered secondary dominants (A7#9, A7b13) create sophisticated tension as the VI7 chord leading to the ii (Dm7).
  • The Ab7#11 functions as a tritone substitute for D7 (subV/V), facilitating a chromatic approach to the G7 dominant.

Improvisation Focus C Major Bebop scale and chord tone targeting on the ii-V-I turnarounds.

Difficulty Rating 2/5: The moderate tempo and standard functional progressions are accessible, though navigating the altered VI7 extensions requires basic knowledge of tension and resolution.


📚 Standard Available in:

The Real Book - Volume V
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