Chord Distribution Analysis
| Chord Symbol | Count | Frequency |
|---|---|---|
| E7 | 6 | 15.0% |
| Bm7b5 | 4 | 10.0% |
| Em7b5 | 4 | 10.0% |
| A7b9 | 4 | 10.0% |
| D7 | 3 | 7.5% |
| Am7 | 3 | 7.5% |
| F7 | 3 | 7.5% |
| Dm7 | 3 | 7.5% |
Key Patterns Detected
| Pattern | Function | Frequency |
|---|---|---|
| E7 -> Bm7b5 | Resolution (Minor) | 4 |
| Bm7b5 -> E7 | Setup (Minor Key) | 4 |
| Em7b5 -> A7b9 | Setup (Minor Key) | 4 |
| F#m7b5 -> B7 | Setup (Minor Key) | 2 |
| A7b9 -> Em7b5 | Resolution (Minor) | 1 |
| A7b9 -> Dm7 | Resolution (Minor) | 1 |
| B7 -> F#m7b5 | Resolution (Minor) | 1 |
| B7 -> Emaj7 | Resolution (Major) | 1 |
| Cm7 -> F7 | Setup (Major Key) | 1 |
| Am7 -> D7 | Setup (Major Key) | 1 |
- Frequent minor ii-V-i progressions (Bm7b5-E7 to Am; Em7b5-A7b9 to Dm) establish a minor key center while facilitating temporary tonal shifts.
- Deployment of altered dominants (e.g., A7b9) and tritone substitutions (e.g., Bb7, F7) introduces rich chromaticism and harmonic tension.
- Secondary dominants (e.g., D7, B7) dynamically shift temporary key centers, creating intricate voice leading and reharmonization possibilities.
Improvisation Focus: Altered Scale (Super Locrian) for the various dominant 7th chords.
Difficulty Rating: 4 (Advanced) - Requires navigating complex modulations, altered dominants, and non-diatonic chord substitutions.