Chord Distribution Analysis
| Chord Symbol | Count | Frequency |
|---|---|---|
| Am7 | 8 | 21.1% |
| D7 | 7 | 18.4% |
| Dm7 | 6 | 15.8% |
| G7 | 4 | 10.5% |
| A7 | 3 | 7.9% |
| Cmaj7 | 2 | 5.3% |
| E7 | 2 | 5.3% |
| G9 | 1 | 2.6% |
Key Patterns Detected
| Pattern | Function | Frequency |
|---|---|---|
| Am7 -> D7 | Setup (Major Key) | 6 |
| D7 -> Am7 | Resolution (Minor) | 4 |
| Dm7 -> G7 | Setup (Major Key) | 4 |
| G7 -> Dm7 | Resolution (Minor) | 2 |
| G7 -> Cmaj7 | Resolution (Major) | 2 |
| Cmaj7 -> F7 | Setup (Major Key) | 1 |
| Em7 -> A7 | Setup (Major Key) | 1 |
| A7 -> Dm7 | Resolution (Minor) | 1 |
| Bm7b5 -> E7 | Setup (Minor Key) | 1 |
| E7 -> Am7 | Resolution (Minor) | 1 |
| Bm7 -> E7 | Setup (Major Key) | 1 |
- The initial
Am7 - A7 - Am7 - D7sequence suggests a minor i chord moving towards a V7/iv (A7toD7), creating a bluesy or temporary tonicization of G throughAm7-D7(ii-V in G). - A clear ii-V-I progression to the relative major (
Dm7 - G7 - Cmaj7) firmly establishes C major as a significant harmonic destination. - The
F7followingCmaj7functions as a subdominant seventh or backdoor dominant to C, creating an open-ended cadence and potential for further modulation.
Improvisation Focus: Navigating the interplay between A natural minor and C major scales, with focused attention on Mixolydian modes over dominant chords.
Difficulty Rating: 3 (Intermediate). Requires awareness of shifting tonalities between A minor and C major, plus applying appropriate scales over secondary dominants and temporary ii-V progressions.