Chord Distribution Analysis
| Chord Symbol | Count | Frequency |
|---|---|---|
| Eb6 | 4 | 12.9% |
| Bb7 | 4 | 12.9% |
| Cm6 | 3 | 9.7% |
| G7b9 | 3 | 9.7% |
| Ebm7 | 2 | 6.5% |
| Gm7b5 | 2 | 6.5% |
| C7b9 | 2 | 6.5% |
| Fm7b5 | 2 | 6.5% |
Key Patterns Detected
| Pattern | Function | Frequency |
|---|---|---|
| Gm7b5 -> C7b9 | Setup (Minor Key) | 2 |
| C7b9 -> Fm7b5 | Resolution (Minor) | 2 |
| Fm7b5 -> Bb7 | Setup (Minor Key) | 2 |
| Am7b5 -> D7b13 | Setup (Minor Key) | 2 |
| G7b9 -> Cm6 | Resolution (Minor) | 2 |
| Fm7 -> Bb7 | Setup (Major Key) | 2 |
| Cm6 -> G7b9 | Setup (Major Key) | 1 |
| G7b9 -> Cm7 | Resolution (Minor) | 1 |
Harmonic Highlights:
- The prominent use of the parallel minor (Ebm7) adds a distinctive Gershwinian color, often preceding functional harmony.
- Frequent extended ii-V-I progressions, such as Am7b5-D7b13-G7b9-Cm6, demonstrate sophisticated secondary dominant movements and temporary tonicization.
- The application of tritone substitution, exemplified by Gb7 leading to Fm7, introduces a classic jazz reharmonization technique (bII7 of F leading to ii-V of Eb).
Improvisation Focus: Altered Scale (Super Locrian) to navigate the complex dominant seventh chords.
Difficulty Rating: 4 (Advanced). The constant harmonic movement, numerous altered dominants, and tritone substitutions demand advanced harmonic understanding and improvisational agility.