Chord Distribution Analysis

Chord SymbolCountFrequency
A7616.2%
Em7513.5%
Am7410.8%
D7410.8%
Gmaj738.1%
E738.1%
G025.4%
B7b1325.4%

Key Patterns Detected

PatternFunctionFrequency
Em7 -> A7Setup (Major Key)4
B7b13 -> Em7Resolution (Minor)2
A7 -> Em7Resolution (Minor)2
Am7 -> D7Setup (Major Key)2
Cmaj7 -> F7Setup (Major Key)1
Bm7 -> E7Setup (Major Key)1
E7 -> Am7Resolution (Minor)1

Harmonic Highlights

  • Secondary dominant motion via B7b13 to Em7 reinforces the pull toward the relative minor, creating Ellington’s signature melancholic “blues-ballad” texture.
  • The progression utilizes a “back-door” resolution (F7 to Gmaj7), employing a bVII7 to I movement that provides a sophisticated alternative to standard V-I cadences.
  • Circle of fifths extensions (E7–A7–D7) create a chromatic bridge that smoothly re-establishes the tonic through sequential dominant motion.

Improvisation Focus Chord Tone Soloing: Emphasizing the 3rds and 7ths is crucial to navigate the frequent secondary dominants and shifting tonal centers.

Difficulty Rating 3/5: While the ballad tempo is forgiving, the performer must master frequent non-diatonic resolutions and secondary dominant chains to sound authentic.