Chord Distribution Analysis
| Chord Symbol | Count | Frequency |
|---|---|---|
| A7 | 7 | 10.4% |
| Dmaj7 | 7 | 10.4% |
| Em7 | 5 | 7.5% |
| Bm7 | 4 | 6.0% |
| D7 | 3 | 4.5% |
| F#7 | 3 | 4.5% |
| D7#9 | 2 | 3.0% |
| Gm7 | 2 | 3.0% |
Key Patterns Detected
| Pattern | Function | Frequency |
|---|---|---|
| Em7 -> A7 | Setup (Major Key) | 5 |
| A7 -> Dmaj7 | Resolution (Major) | 4 |
| D7#9 -> Gm7 | Resolution (Minor) | 2 |
| Am7 -> D7 | Setup (Major Key) | 2 |
| Bm7 -> E7 | Setup (Major Key) | 2 |
| C#m7 -> F#7 | Setup (Major Key) | 2 |
| F#7 -> Bmaj7 | Resolution (Major) | 2 |
| Fm7 -> Bb7 | Setup (Major Key) | 1 |
| Gm7b5 -> C7b5 | Setup (Minor Key) | 1 |
| C7b5 -> Fmaj7 | Resolution (Major) | 1 |
| F#m7 -> B7 | Setup (Major Key) | 1 |
| F#7 -> Bm7 | Resolution (Minor) | 1 |
Harmonic Highlights:
- The opening
D7#9establishes an immediate bluesy, dominant quality for the tonic chord in D major. - Frequent ii-V progressions (
Am7-D7,Bm7-E7) lead to various diatonic and non-diatonic temporary tonicizations, notably to B major (C#m7-F#7-Bmaj7). - Significant chromatic mediant motion is evident with
Gbmaj7followingDmaj7, leading into further remote modulations viaAb7andFm7.
Improvisation Focus: Navigating rapidly shifting ii-V-I progressions and their associated dominant alterations across multiple key centers.
Difficulty Rating: 5 (Advanced). The piece demands mastery of frequent and distant modulations, chromatic mediant relationships, and altered dominant harmony, requiring precise harmonic recall.