Chord Distribution Analysis

Chord SymbolCountFrequency
Dm7713.5%
G7713.5%
Am759.6%
Cmaj747.7%
Em747.7%
A747.7%
D735.8%
Bm723.8%

Key Patterns Detected

PatternFunctionFrequency
Dm7 -> G7Setup (Major Key)6
Em7 -> A7Setup (Major Key)3
Bm7 -> E7Setup (Major Key)2
Bbm7 -> Eb7Setup (Major Key)2
Am7 -> D7Setup (Major Key)2
Abm7 -> Db7Setup (Major Key)2
A7 -> Dmaj7Resolution (Major)2
A7 -> Em7Resolution (Minor)1
G7 -> Dm7Resolution (Minor)1
Dm7 -> G7susSetup (Major Key)1
G7sus -> Cmaj7Resolution (Major)1
A7#5 -> Dm7Resolution (Minor)1

Harmonic Highlights

  • Frequent tritone substitutions, notably Bbm7-Eb7 and Abm7-Db7, introduce advanced chromaticism and remote key centers.
  • The progression heavily utilizes ii-V movements (e.g., Am7-D7, Em7-A7) as primary harmonic drivers, often chaining them sequentially.
  • Classic iii-VI motion (Bm7-E7) creates descending cycles of fifths, preparing for new ii-V sections.
  • Brief, implied modulations via secondary dominants and their substitutions lead to a constantly shifting tonal center rather than a static G major.

Improvisation Focus Navigating rapid ii-V progressions and tritone substitutions using arpeggios and guide tones.

Difficulty Rating 4 (Advanced Intermediate) due to numerous, quick-moving modulations and extensive use of chromatic substitution chords.