Chord Distribution Analysis
| Chord Symbol | Count | Frequency |
|---|---|---|
| Gm7 | 11 | 20.0% |
| Fmaj7 | 10 | 18.2% |
| C7 | 9 | 16.4% |
| D7b9 | 7 | 12.7% |
| Eb7 | 4 | 7.3% |
| D7 | 3 | 5.5% |
| Bbm7 | 2 | 3.6% |
| Am7 | 2 | 3.6% |
Key Patterns Detected
| Pattern | Function | Frequency |
|---|---|---|
| Gm7 -> C7 | Setup (Major Key) | 9 |
| C7 -> Fmaj7 | Resolution (Major) | 7 |
| D7b9 -> Gm7 | Resolution (Minor) | 6 |
| Bbm7 -> Eb7 | Setup (Major Key) | 2 |
| Am7 -> D7b9 | Setup (Major Key) | 2 |
| Gm7 -> D7b9#5 | Setup (Major Key) | 1 |
| D7b9#5 -> Gm7 | Resolution (Minor) | 1 |
| C7 -> Gm7 | Resolution (Minor) | 1 |
| Bbmaj7 -> Eb7 | Setup (Major Key) | 1 |
| D7 -> Gm7 | Resolution (Minor) | 1 |
Harmonic Highlights:
- The prominent Bbm7-Eb7-Fmaj7 progression functions as a “backdoor” ii-V to the tonic, introducing a bVII7 sound.
- Frequent secondary dominant usage, notably D7b9 (V/ii) leading to Gm7, creates a common dominant resolution chain.
- The D7b9#5 chord introduces an altered dominant quality, increasing chromatic tension before resolving to Gm7.
Improvisation Focus: Understanding and applying altered dominant scales and concepts.
Difficulty Rating: 4/5. The blend of standard progressions with backdoor dominants, frequent secondary dominants, and explicitly altered dominant chords requires a solid grasp of advanced harmonic concepts.