Chord Distribution Analysis
| Chord Symbol | Count | Frequency |
|---|---|---|
| Bm7 | 4 | 16.0% |
| E7 | 4 | 16.0% |
| Am7 | 4 | 16.0% |
| D7 | 4 | 16.0% |
| Gmaj7 | 3 | 12.0% |
| Bm7b5 | 1 | 4.0% |
| E7b9 | 1 | 4.0% |
| C#m7b5 | 1 | 4.0% |
Key Patterns Detected
| Pattern | Function | Frequency |
|---|---|---|
| Bm7 -> E7 | Setup (Major Key) | 4 |
| Am7 -> D7 | Setup (Major Key) | 4 |
| E7 -> Bm7 | Resolution (Minor) | 2 |
| E7 -> Am7 | Resolution (Minor) | 2 |
| D7 -> Am7 | Resolution (Minor) | 2 |
| D7 -> Gmaj7 | Resolution (Major) | 1 |
| Bm7b5 -> E7b9 | Setup (Minor Key) | 1 |
| Am7b5 -> D7#9 | Setup (Minor Key) | 1 |
| D7#9 -> Gmaj7 | Resolution (Major) | 1 |
| Gmaj7 -> C7 | Setup (Major Key) | 1 |
Harmonic Highlights:
- Prominent ii-V cycles, notably Bm7-E7 (ii-V of Am) establishing an initial tension before the home key’s Am7-D7-Gmaj7 resolution.
- An intricate chromatic descent featuring iiø-V changes (Bm7b5-E7b9, C#m7b5, Am7b5) that delays and builds tension towards the final D7#9.
- Rich dominant chord voicings, exemplified by E7b9 and D7#9, along with the characteristic passing C7, adding modern color and harmonic tension.
Improvisation Focus: Altered Dominant scales.
Difficulty Rating: 4 (Advanced Intermediate) - The extensive use of altered dominants, half-diminished chords, and non-resolving chromatic ii-Vs demands a strong harmonic understanding.