Chord Distribution Analysis
| Chord Symbol | Count | Frequency |
|---|---|---|
| Dm7 | 16 | 59.3% |
| Gm7 | 3 | 11.1% |
| A7#9 | 2 | 7.4% |
| Am7b5 | 1 | 3.7% |
| D7b9 | 1 | 3.7% |
| C7 | 1 | 3.7% |
| Fmaj7 | 1 | 3.7% |
| Em7b5 | 1 | 3.7% |
Key Patterns Detected
| Pattern | Function | Frequency |
|---|---|---|
| Dm7 -> A7#9 | Setup (Major Key) | 2 |
| A7#9 -> Dm7 | Resolution (Minor) | 2 |
| Am7b5 -> D7b9 | Setup (Minor Key) | 1 |
| D7b9 -> Gm7 | Resolution (Minor) | 1 |
| Gm7 -> C7 | Setup (Major Key) | 1 |
| C7 -> Fmaj7 | Resolution (Major) | 1 |
| Em7b5 -> A7b9 | Setup (Minor Key) | 1 |
| A7b9 -> Dm7 | Resolution (Minor) | 1 |
Harmonic Highlights
- The extended Dm7 vamp establishes a strong minor-key or Dorian modality focus, frequently returning to D minor as a temporary tonic.
- Frequent use of altered dominant chords (A7#9, D7b9, A7b9) adds bluesy tension and harmonic color, especially when resolving to minor chords.
- Multiple ii-V-I progressions (Am7b5-D7b9-Gm7, Gm7-C7-Fmaj7, Em7b5-A7b9-Dm7) demonstrate sophisticated temporary tonicizations.
Improvisation Focus Navigating ii-V-I progressions and applying appropriate altered dominant scales.
Difficulty Rating 4 (Advanced Intermediate) Requires a strong grasp of ii-V-I changes, altered dominant scales, and understanding temporary tonicizations within shifting key centers.