Chord Distribution Analysis

Chord SymbolCountFrequency
Amaj736.4%
Gmaj736.4%
Dmaj724.3%
Ebmaj724.3%
Am724.3%
D724.3%
Cm724.3%
Gbmaj724.3%

Key Patterns Detected

PatternFunctionFrequency
Am7 -> D7Setup (Major Key)2
D7 -> Gmaj7Resolution (Major)1
Cm7 -> F7Setup (Major Key)1
F7 -> Bbmaj7Resolution (Major)1
Gm7 -> C7Setup (Major Key)1
Abm7 -> Db7Setup (Major Key)1

Harmonic Highlights

  • Employs “constant structure” harmonic planing where Major 7th chords (Bmaj7, Amaj7, Dmaj7, Gmaj7) move via non-diatonic intervals, bypassing traditional functional cycles.
  • Features chromatic “side-stepping” ii-V patterns (Fm7 to Ebm9) that obscure the G minor tonal center through parallel motion.
  • Utilizes sophisticated dominant tension through tritone substitutions (Gb7#5 to F13) and altered dominant chains (E7b9 to Ebmaj7) to facilitate smooth voice leading into distant keys.

Improvisation Focus Chord-scale mapping and navigating rapid modulations through unrelated tonal centers.

Difficulty Rating 4/5: The non-functional movement of Major 7th chords and frequent shifts between distant keys require advanced vertical awareness and precise guide-tone navigation.