Chord Distribution Analysis
| Chord Symbol | Count | Frequency |
|---|---|---|
| D7 | 8 | 18.6% |
| Am7 | 7 | 16.3% |
| Gmaj7 | 4 | 9.3% |
| Ab07 | 4 | 9.3% |
| E6 | 3 | 7.0% |
| G7 | 2 | 4.7% |
| Cmaj7 | 2 | 4.7% |
| Cm6 | 2 | 4.7% |
Key Patterns Detected
| Pattern | Function | Frequency |
|---|---|---|
| Am7 -> D7 | Setup (Major Key) | 6 |
| D7 -> Gmaj7 | Resolution (Major) | 2 |
| G7 -> Cmaj7 | Resolution (Major) | 2 |
| Gmaj7/D -> D7 | Setup (Major Key) | 2 |
| D7 -> Am7 | Resolution (Minor) | 1 |
| E7 -> Am7 | Resolution (Minor) | 1 |
- The Ab07 serves as a common passing diminished (e.g., vii°7/ii) to Am7, adding chromatic embellishment to the I-ii-V.
- G7-Cmaj7 provides a classic V7/IV to IV tonicization, momentarily highlighting the subdominant.
- Cm6 introduces modal interchange as a iv minor, lending a distinctive bluesy-melancholic color.
- The E6, A7, C#m7, B6 sequence demonstrates sophisticated tonicizations (e.g., A7 as V7/D, C#m7-B6 as ii-I in B), demanding fluid navigation of temporary key centers.
Improvisation Focus: Navigating temporary tonicizations and modulatory shifts.
Difficulty Rating: 4 (Advanced) The frequent and complex modulatory shifts and non-diatonic chord choices require a strong grasp of harmonic function and flexible scale application beyond simple diatonicism.