Chord Distribution Analysis

Chord SymbolCountFrequency
Dm71028.6%
G71028.6%
C638.6%
Am738.6%
Em725.7%
Ebm725.7%
Ab725.7%
D725.7%

Key Patterns Detected

PatternFunctionFrequency
Dm7 -> G7Setup (Major Key)10
G7 -> Dm7Resolution (Minor)6
Ebm7 -> Ab7Setup (Major Key)2
Ab7 -> Ebm7Resolution (Minor)1
Am7 -> D7Setup (Major Key)1
Em7 -> A7Setup (Major Key)1

Harmonic Highlights

  • The progression relies on repetitive ii-V sequences (Dm7-G7) that establish a strong dominant pull toward the C6 tonic, emphasizing functional diatonic harmony.
  • A sudden chromatic shift occurs with the Ebm7-Ab7 sequence, functioning as a non-diatonic ii-V “side-slip” that provides a brief, sophisticated modulation a half-step above the home key.
  • The structure utilizes iii-vi movements (Em7-Am7) as a diatonic bridge, maintaining the tonal center while adding harmonic density before returning to the primary ii-V cycle.

Improvisation Focus Navigating ii-V-I cells with a focus on “side-slipping” from D Dorian to Eb Dorian to outline the chromatic modulation.

Difficulty Rating 2/5 — The harmonic rhythm is steady and the modulations are brief, making it an ideal study for transitioning between diatonic and chromatic ii-V patterns.


📚 Standard Available in:

The Real Book - Volume I
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