Chord Distribution Analysis
| Chord Symbol | Count | Frequency |
|---|---|---|
| Dm7 | 15 | 32.6% |
| A7b13 | 5 | 10.9% |
| E7#9 | 4 | 8.7% |
| G7 | 3 | 6.5% |
| Gm7 | 3 | 6.5% |
| Bbmaj7 | 2 | 4.3% |
| E7b9 | 2 | 4.3% |
| Fmaj7 | 2 | 4.3% |
Key Patterns Detected
| Pattern | Function | Frequency |
|---|---|---|
| A7b13 -> Dm7 | Resolution (Minor) | 5 |
| A7alt -> Dm7 | Resolution (Minor) | 1 |
| Dm7 -> G7 | Setup (Major Key) | 1 |
| Gm7 -> C7 | Setup (Major Key) | 1 |
| C7 -> Fmaj7 | Resolution (Major) | 1 |
| A7sus -> Dm7 | Resolution (Minor) | 1 |
| Dm7 -> A7b13 | Setup (Major Key) | 1 |
Harmonic Highlights:
- Frequent use of secondary dominants, notably
E7#9(V/A) leading toA7b13, intensifying the minor ii-V-i progression. - Modal interchange with
Bbmaj7(bVI from D natural minor) provides a lyrical color shift within the D minor tonality. - A clear modulation to the relative major key of F is established through the
Gm7-C7-Fmaj7ii-V-I sequence. - Deployment of altered dominant chords like
A7b13andA7altcreates strong, tension-filled resolutions back to the D minor tonic.
Improvisation Focus:
D melodic minor scale and its derived modes (e.g., A Altered Scale for A7alt/A7b13).
Difficulty Rating: 4 (Advanced Intermediate) - The sophisticated use of altered dominants, modal interchange, and clear modulations requires a deep understanding of jazz harmony.