Chord Distribution Analysis
| Chord Symbol | Count | Frequency |
|---|---|---|
| C7 | 7 | 17.5% |
| F7 | 5 | 12.5% |
| Cm7 | 3 | 7.5% |
| D7 | 2 | 5.0% |
| Ab7 | 2 | 5.0% |
| G7 | 2 | 5.0% |
| Gb7 | 2 | 5.0% |
| Bb7sus | 2 | 5.0% |
Key Patterns Detected
| Pattern | Function | Frequency |
|---|---|---|
| Bb7 -> Ebmaj7 | Resolution (Major) | 2 |
| Am7b5 -> D7b9 | Setup (Minor Key) | 2 |
| Dm7b5 -> G7b9 | Setup (Minor Key) | 2 |
| Cm7 -> F7 | Setup (Major Key) | 1 |
Harmonic Highlights:
- Frequent use of tritone substitutions, notably Ab7 following D7 and Gb7 serving as a sub for C7.
- Rapid, sequential modulations through various dominant cycles, including V-I movements to C minor and Eb major.
- Prominent altered dominant chords (D7b9, G7b9) within minor ii-V-i progressions (Am7b5-D7b9 to G minor, Dm7b5-G7b9 to C minor).
- Extensive chromaticism driven by non-diatonic dominant seventh chords (G7, C7, F7, Eb7), challenging the primary G minor key center.
Improvisation Focus: Application of altered and Lydian dominant scales over complex dominant structures.
Difficulty Rating: 4 (Advanced). Requires a sophisticated understanding of advanced harmonic concepts like tritone substitution, altered dominants, and rapid modulations.