Chord Distribution Analysis
| Chord Symbol | Count | Frequency |
|---|---|---|
| Cm7 | 11 | 21.2% |
| F7 | 9 | 17.3% |
| Bbmaj7 | 6 | 11.5% |
| Bb6 | 6 | 11.5% |
| Db07 | 2 | 3.8% |
| Ab7#11 | 2 | 3.8% |
| Gm6 | 2 | 3.8% |
| Ebmaj7 | 2 | 3.8% |
Key Patterns Detected
| Pattern | Function | Frequency |
|---|---|---|
| Cm7 -> F7 | Setup (Major Key) | 9 |
| F7 -> Bbmaj7 | Resolution (Major) | 5 |
| F7 -> Cm7 | Resolution (Minor) | 2 |
| Am7 -> D7 | Setup (Major Key) | 1 |
| Ebm6 -> Ab7 | Setup (Major Key) | 1 |
| Em7b5 -> A7sus | Setup (Minor Key) | 1 |
Harmonic Highlights
- The Db07 functions as a secondary diminished, substituting for V7/ii (A7b9) before resolving to Cm7, creating tension.
- An Ab7#11 acts as a bVII7 backdoor dominant, providing a softer, unresolved sound before moving to Bb6.
- The progression Am7-D7, a ii-V of Gm, deceptively resolves to Ebmaj7 (bVI), introducing a sudden shift in harmonic direction.
Improvisation Focus Navigating altered dominant chord substitutions and extensions.
Difficulty Rating 3 - It features standard II-V-I movements but includes several key substitutions and deceptive cadences requiring awareness of harmonic direction changes.