Chord Distribution Analysis

Chord SymbolCountFrequency
Em7513.9%
E7b13411.1%
Dm7411.1%
G7411.1%
Am738.3%
Cmaj725.6%
F7#1125.6%
A7b1325.6%

Key Patterns Detected

PatternFunctionFrequency
Dm7 -> G7Setup (Major Key)4
Cmaj7 -> F7#11Setup (Major Key)2
A7b13 -> Dm7Resolution (Minor)1
Ebm7 -> Ab7Setup (Major Key)1
G7 -> Cmaj7Resolution (Major)1
E7b13 -> Am7Resolution (Minor)1
Am7 -> D7Setup (Major Key)1
Em7 -> A7Setup (Major Key)1
A7 -> Dm7Resolution (Minor)1

Harmonic Highlights

  • The progression utilizes a foundational III-VI-II-V cycle (E7-A7-Dm7-G7), employing secondary dominants with b13 alterations to heighten functional tension.
  • Chromatic voice leading is reinforced by the Eb°7 passing chord, which facilitates a smooth stepwise descent between the iii (Em7) and ii (Dm7) chords.
  • The F7#11 serves as a Lydian Dominant substitution on the IV, adding sophisticated color to the subdominant area.
  • Sequential ii-V cells (Ebm7-Ab7 shifting to Dm7-G7) create brief non-diatonic diversions that resolve logically back to the C major tonic.

Improvisation Focus C Major Bebop Scale (incorporating the G# passing tone).

Difficulty Rating 3/5 (Intermediate): The structure is largely diatonic but requires fluid navigation of secondary dominants and chromatic passing chords at typical swing tempos.