Chord Distribution Analysis
| Chord Symbol | Count | Frequency |
|---|---|---|
| A7b9 | 4 | 8.5% |
| Dm7 | 4 | 8.5% |
| C7 | 4 | 8.5% |
| Fmaj7 | 3 | 6.4% |
| Em7b5 | 3 | 6.4% |
| Gm7 | 3 | 6.4% |
| G7 | 2 | 4.3% |
| Bbm7 | 2 | 4.3% |
Key Patterns Detected
| Pattern | Function | Frequency |
|---|---|---|
| Em7b5 -> A7b9 | Setup (Minor Key) | 3 |
| Gm7 -> C7 | Setup (Major Key) | 3 |
| A7b9 -> Dm7 | Resolution (Minor) | 2 |
| C7 -> Fmaj7 | Resolution (Major) | 2 |
| Dm7 -> G7 | Setup (Major Key) | 1 |
| Cm7 -> F7 | Setup (Major Key) | 1 |
| F7 -> Bbm7 | Resolution (Minor) | 1 |
| D7b9 -> Am7b5 | Resolution (Minor) | 1 |
| Am7b5 -> D7b9 | Setup (Minor Key) | 1 |
| D7b9 -> Gm7 | Resolution (Minor) | 1 |
| Bm7 -> E7 | Setup (Major Key) | 1 |
| A7b9 -> Dm | Resolution (Minor) | 1 |
| A7b9 -> Dm6 | Resolution (Minor) | 1 |
Harmonic Highlights
- The core minor iiø7-V7b9-i (Em7b5-A7b9-Dm7) firmly establishes the D minor tonality with characteristic altered dominants.
- Frequent shifts to the relative major (Fmaj7, via Dm7-G7-C7) provide a common contrasting key area, typical of minor standards.
- Transient modulations, notably to B-flat minor (Cm7-F7-Bbm7), introduce fresh harmonic color and require adaptability.
- Later sections feature complex chromatic alterations and successive half-diminished chords (Bm7b5, Dm7b5, Am7b5), implying intricate voice leading.
Improvisation Focus Navigating minor ii-V-i progressions and their transient modulations.
Difficulty Rating 4: The frequent minor ii-V-i progressions, transient modulations, and extensive use of altered dominant and half-diminished chords demand sophisticated harmonic understanding.