Chord Distribution Analysis
| Chord Symbol | Count | Frequency |
|---|---|---|
| Dm7b5 | 4 | 14.8% |
| Cm69 | 3 | 11.1% |
| G7b13 | 3 | 11.1% |
| Fm69 | 3 | 11.1% |
| Fm7 | 2 | 7.4% |
| Bb7 | 2 | 7.4% |
| Ebm7 | 2 | 7.4% |
| Ab7 | 2 | 7.4% |
Key Patterns Detected
| Pattern | Function | Frequency |
|---|---|---|
| Dm7b5 -> G7b13 | Setup (Minor Key) | 3 |
| Fm7 -> Bb7 | Setup (Major Key) | 2 |
| Bb7 -> Ebm7 | Resolution (Minor) | 2 |
| Ebm7 -> Ab7 | Setup (Major Key) | 2 |
| G7b13 -> Cm69 | Resolution (Minor) | 1 |
| C7b9 -> Fm69 | Resolution (Minor) | 1 |
| Gm7b5 -> C7b13 | Setup (Minor Key) | 1 |
| C7b13 -> Fm69 | Resolution (Minor) | 1 |
| Gm7 -> C7 | Setup (Major Key) | 1 |
| C7 -> Fm7 | Resolution (Minor) | 1 |
| Dm7b5 -> G7b9 | Setup (Minor Key) | 1 |
Harmonic Highlights
- Prominent use of minor ii-V-i progressions (Dm7b5-G7b13-Cm69 and Gm7b5-C7b13-Fm69) establishing temporary key centers.
- Frequent employment of secondary dominants (C7b9 resolving to Fm69) to facilitate modulations to the subdominant minor.
- Rich harmonic texture featuring 6/9 extensions on minor tonics and b13 alterations on dominant chords.
- A sequential descending cycle of minor ii-V’s (Fm7-Bb7, Ebm7-Ab7) characteristic of a “rhythm changes”-like bridge or turnaround section.
Improvisation Focus Precise outlining of ii-V-i progressions and secondary dominants.
Difficulty Rating 4 (Advanced Intermediate) - Requires fluent navigation of minor harmony, altered dominants, and accurate chord-scale application over shifting tonal centers.