Chord Distribution Analysis
| Chord Symbol | Count | Frequency |
|---|---|---|
| Am7 | 9 | 25.0% |
| Bm7b5 | 5 | 13.9% |
| E7b9 | 5 | 13.9% |
| Fmaj7 | 4 | 11.1% |
| Gm7 | 2 | 5.6% |
| C7 | 2 | 5.6% |
| F#m7b5 | 1 | 2.8% |
| B7b9 | 1 | 2.8% |
Key Patterns Detected
| Pattern | Function | Frequency |
|---|---|---|
| Bm7b5 -> E7b9 | Setup (Minor Key) | 5 |
| E7b9 -> Am7 | Resolution (Minor) | 4 |
| Gm7 -> C7 | Setup (Major Key) | 2 |
| C7 -> Fmaj7 | Resolution (Major) | 2 |
| F#m7b5 -> B7b9 | Setup (Minor Key) | 1 |
| Am7 -> D7 | Setup (Major Key) | 1 |
- Prominent Minor ii-V-i: The recurring Bm7b5-E7b9-Am7 progression clearly defines and reinforces the A minor tonic.
- Modulation to bVI: A distinct ii-V-I (Gm7-C7-Fmaj7) leads to F major (bVI), providing a rich, temporary shift in key center.
- Secondary Dominant Tension: The F#m7b5-B7b9 sequence creates a ii-V tension, tonicizing the dominant (E minor) before returning to the home key’s ii-V-i.
Improvisation Focus: A Harmonic Minor scale to navigate the minor key and altered dominant chords.
Difficulty Rating: 3. The presence of complex minor ii-V-i progressions, a modulation to bVI, and secondary dominants requires a solid grasp of minor key harmony.