Chord Distribution Analysis

Chord SymbolCountFrequency
Gbmaj7#11316.7%
Dm7316.7%
Fmaj7211.1%
Ebmaj7#11211.1%
Cm715.6%
Bbm715.6%
Am715.6%
Bbmaj715.6%

Key Patterns Detected

PatternFunctionFrequency
Em7b5 -> A7b9Setup (Minor Key)1
A7b9 -> Dm7Resolution (Minor)1

Harmonic Highlights

  • Frequent use of non-functional “side-slipping” via Gbmaj7#11 (bIImaj7) and Ebmaj7#11 (bVIImaj7), creating a Lydian-inflected, shifting tonal landscape.
  • Stepwise descending minor chords (Dm7 - Cm7 - Bbm7 - Am7) provide a modal, linear transition that avoids traditional circle-of-fifths logic.
  • A functional ii-V-i turnaround (Em7b5 - A7b9 - Dm7) serves as a momentary tonal anchor in the relative minor (D minor).
  • The harmonic structure favors “constant structure” relationships, where the quality of the chord remains static while the root moves symmetrically or chromatically.

Improvisation Focus Chord-scale shifting: Navigating the parallel Lydian structures by rapidly adjusting the parent scale to accommodate the non-functional Major 7th movements.

Difficulty Rating 3/5: While the tempo is usually moderate, the non-functional harmonic shifts and modal descent require a sophisticated understanding of chord-scale relationships.