Chord Distribution Analysis
| Chord Symbol | Count | Frequency |
|---|---|---|
| G13sus | 5 | 11.1% |
| Am7b5 | 4 | 8.9% |
| D7b9 | 4 | 8.9% |
| C13 | 4 | 8.9% |
| Ab13/C | 3 | 6.7% |
| Gm9 | 3 | 6.7% |
| Abmaj7/G | 3 | 6.7% |
| Gm11 | 2 | 4.4% |
Key Patterns Detected
| Pattern | Function | Frequency |
|---|---|---|
| Am7b5 -> D7b9 | Setup (Minor Key) | 4 |
| Gm11 -> C7b9 | Setup (Major Key) | 2 |
| C7b9 -> Fm7 | Resolution (Minor) | 2 |
| Am7 -> D7 | Setup (Major Key) | 1 |
| D7 -> Gm9 | Resolution (Minor) | 1 |
Harmonic Highlights:
- The opening Am7b5-D7b9-G13sus progression in G establishes an open, suspended feel, delaying clear tonic resolution and favoring modal exploration.
- A chain of descending ii-V progressions through minor keys (e.g., Gm11-C7b9 to F, Fm7-Bb13b9 to Eb) drives a significant section with clear functional harmony.
- The recurring C13 alternating with Ab13/C (a bVI dominant substitution over a C pedal) generates pervasive tritone tension and introduces polychordal implications.
Improvisation Focus: Melodic minor scale modes for navigating the numerous altered dominant and minor chords.
Difficulty Rating: 4 (Advanced). The rapid, non-diatonic modulations and frequent use of altered dominants require sophisticated harmonic understanding and technique.