Chord Distribution Analysis
| Chord Symbol | Count | Frequency |
|---|---|---|
| Gm7 | 6 | 13.6% |
| Am7 | 5 | 11.4% |
| D7 | 5 | 11.4% |
| C7 | 4 | 9.1% |
| Bbmaj7 | 3 | 6.8% |
| F6 | 3 | 6.8% |
| Fmaj7 | 2 | 4.5% |
| B7#11 | 2 | 4.5% |
Key Patterns Detected
| Pattern | Function | Frequency |
|---|---|---|
| Am7 -> D7 | Setup (Major Key) | 5 |
| Gm7 -> C7 | Setup (Major Key) | 4 |
| D7 -> Gm7 | Resolution (Minor) | 3 |
| Bbm7 -> Eb7 | Setup (Major Key) | 1 |
| Eb7 -> Abmaj7 | Resolution (Major) | 1 |
| C7 -> Fmaj7 | Resolution (Major) | 1 |
| Bm7b5 -> E7b9 | Setup (Minor Key) | 1 |
| A7 -> Dm7 | Resolution (Minor) | 1 |
| Cm7 -> F7 | Setup (Major Key) | 1 |
| F7 -> Bbmaj7 | Resolution (Major) | 1 |
| D7#5 -> Gm7 | Resolution (Minor) | 1 |
Harmonic Highlights:
- Prominent use of the B7#11 chord, acting as a tritone substitute dominant for V/IV (F#7) or a backdoor dominant to Bbmaj7 (IV).
- Frequent deployment of II-V progressions, often extended (Am7-D7 leading to Gm7, followed by Gm7-C7 resolving to F).
- Introduction of the Ab7 (bIII7) as a chromatic dominant, creating tension and leading to unexpected harmonic shifts.
- A clear, significant modulation to Ab major (bIII) via the Bbm7-Eb7-Abmaj7 II-V-I progression, showcasing advanced key center changes.
Improvisation Focus: Navigating altered dominant chords and temporary modulations to non-diatonic key centers.
Difficulty Rating: 4 (Advanced Intermediate). The blend of conventional II-V movement with significant chromaticism and temporary modulations requires advanced harmonic awareness.