Chord Distribution Analysis
| Chord Symbol | Count | Frequency |
|---|---|---|
| Ab7sus | 8 | 12.9% |
| Ebm7 | 8 | 12.9% |
| Bb7 | 4 | 6.5% |
| Cm7 | 3 | 4.8% |
| Em7 | 3 | 4.8% |
| A7 | 3 | 4.8% |
| Am7b5 | 2 | 3.2% |
| D7b9 | 2 | 3.2% |
Key Patterns Detected
| Pattern | Function | Frequency |
|---|---|---|
| Ab7sus -> Ebm7 | Resolution (Minor) | 8 |
| Ebm7 -> Ab7sus | Setup (Major Key) | 7 |
| Em7 -> A7 | Setup (Major Key) | 3 |
| Am7b5 -> D7b9 | Setup (Minor Key) | 2 |
| D7b9 -> Gm7 | Resolution (Minor) | 2 |
| Gm7 -> C7 | Setup (Major Key) | 2 |
| Cm7 -> F7 | Setup (Major Key) | 2 |
| Bb7 -> Ebmaj7 | Resolution (Major) | 2 |
| Abm7 -> Db7 | Setup (Major Key) | 2 |
| Db7 -> Gbmaj7 | Resolution (Major) | 2 |
| A7 -> Dmaj7 | Resolution (Major) | 2 |
| Dm7 -> G7 | Setup (Major Key) | 1 |
| A7 -> Dm7b5 | Resolution (Minor) | 1 |
| G7 -> Cm7 | Resolution (Minor) | 1 |
Harmonic Highlights:
- Employs extended ii-V-I progressions, often leading to temporary tonicizations, as seen with Am7b5-D7b9-Gm7 and Cm7-F7-Bb7-Ebmaj7.
- Features bold modulations to distant keys, notably a ii-V-I in Gb major (Abm7-Db7-Gbmaj7) and D major (Em7-A7-Dmaj7), creating harmonic surprise.
- Utilizes chromatic devices like tritone substitution (Db7 for G7 leading to Gbmaj7) and altered dominants (F7alt) for heightened tension and resolution.
Improvisation Focus: Mastery of ii-V-I chord-scale relationships across multiple key centers.
Difficulty Rating: 5 (Advanced). The rapid, often distant modulations and complex harmonic rhythm demand sophisticated harmonic understanding and execution.