Chord Distribution Analysis
| Chord Symbol | Count | Frequency |
|---|---|---|
| D7 | 10 | 17.5% |
| Am7 | 7 | 12.3% |
| C7 | 4 | 7.0% |
| E7 | 4 | 7.0% |
| Dm7 | 3 | 5.3% |
| F7 | 3 | 5.3% |
| Bm7 | 3 | 5.3% |
| Bb7 | 2 | 3.5% |
Key Patterns Detected
| Pattern | Function | Frequency |
|---|---|---|
| Am7 -> D7 | Setup (Major Key) | 7 |
| E7 -> Am7 | Resolution (Minor) | 3 |
| Dm7 -> G7 | Setup (Major Key) | 2 |
| G7 -> Cmaj7 | Resolution (Major) | 2 |
| Cmaj7 -> F7 | Setup (Major Key) | 2 |
| Bm7 -> E7 | Setup (Major Key) | 2 |
| D7 -> Gmaj7 | Resolution (Major) | 2 |
| Gmaj7 -> C7#11 | Setup (Major Key) | 1 |
| Bm7b5 -> E7b9 | Setup (Minor Key) | 1 |
| E7b9 -> Am7 | Resolution (Minor) | 1 |
| Bm7b5 -> E7 | Setup (Minor Key) | 1 |
| D7 -> Am7 | Resolution (Minor) | 1 |
| B7 -> Em7 | Resolution (Minor) | 1 |
Harmonic Highlights:
- The opening C7 - Bb7 progression introduces a bluesy, non-functional descending dominant movement (bIII7 to bII7 relative to A minor), immediately establishing harmonic tension.
- The piece features numerous ii-V-I progressions (e.g., Am7-D7-Gmaj7, Dm7-G7-Cmaj7, Bm7-E7-Am7), indicating frequent, rapid temporary tonicizations across various keys.
- Chromatic alterations are prominent, including the C#07 diminished chord for tension and altered dominants like C7#11, enriching the harmonic palette.
Improvisation Focus: Applying chord-specific scales and strategic chromaticism to navigate rapid temporary modulations.
Difficulty Rating: 4. Advanced Intermediate due to the fast harmonic rhythm, frequent key center shifts, and prevalence of non-diatonic chords.