Chord Distribution Analysis
| Chord Symbol | Count | Frequency |
|---|---|---|
| Dm7 | 12 | 23.1% |
| G7 | 12 | 23.1% |
| Cmaj7 | 6 | 11.5% |
| A7 | 6 | 11.5% |
| Em7 | 4 | 7.7% |
| F7 | 2 | 3.8% |
| Em7b5 | 2 | 3.8% |
| A7b9 | 2 | 3.8% |
Key Patterns Detected
| Pattern | Function | Frequency |
|---|---|---|
| Dm7 -> G7 | Setup (Major Key) | 12 |
| A7 -> Dm7 | Resolution (Minor) | 6 |
| Em7 -> A7 | Setup (Major Key) | 4 |
| G7 -> Cmaj7 | Resolution (Major) | 4 |
| Cmaj7 -> F7 | Setup (Major Key) | 2 |
| G7 -> Dm7 | Resolution (Minor) | 2 |
| Em7b5 -> A7b9 | Setup (Minor Key) | 2 |
| A7b9 -> Dm7 | Resolution (Minor) | 2 |
| Bm7b5 -> E7b9 | Setup (Minor Key) | 1 |
| E7b9 -> Am7 | Resolution (Minor) | 1 |
| Am7 -> D7 | Setup (Major Key) | 1 |
Harmonic Highlights:
- Frequent A7 to Dm7 resolutions consistently reinforce D minor as the tonal center.
- The inclusion of Cmaj7 (bVIImaj7) introduces a characteristic Dorian/Mixolydian flavor to the minor key.
- Em7b5-A7b9-Dm7 provides a clear and idiomatic minor ii-V-i progression, crucial for navigating the dominant function.
- Occasional G7 and F7 chords add secondary dominant tension, hinting at temporary tonicizations or blues influences.
Improvisation Focus: D Dorian/Natural Minor, with D Harmonic Minor or A Altered over A7b9.
Difficulty Rating: 3 (Intermediate) – While the core minor ii-V-i is fundamental, the harmonic variations and specific dominant alterations require thoughtful scale application.