Chord Distribution Analysis

Chord SymbolCountFrequency
Dbmaj7#11220.0%
C9sus220.0%
Bbm6220.0%
Abmaj7220.0%
Gbmaj7#11220.0%

No obvious ii-V patterns detected.


  • Prominent use of Dbmaj7#11 (bVI) and Gbmaj7#11 (bII), featuring the Lydian #11 extension in a minor key context.
  • Non-traditional C9sus (V) resolving to Bbm6 (iv), rather than the tonic, suggesting a modal or reharmonized movement.
  • Sequential descending major 7th chords (Abmaj7 to Gbmaj7#11), creating colorful stepwise motion from bIII to bII.

Improvisation Focus: Modal Interchange.

Difficulty Rating: 5 (Advanced). This standard demands a sophisticated understanding of altered chord extensions, modal interchange, and non-functional harmonic movements.