Chord Distribution Analysis
| Chord Symbol | Count | Frequency |
|---|---|---|
| Am7 | 8 | 14.0% |
| D7 | 8 | 14.0% |
| Gmaj7 | 7 | 12.3% |
| Bm7 | 7 | 12.3% |
| E7b9 | 5 | 8.8% |
| Em7 | 3 | 5.3% |
| E7 | 3 | 5.3% |
| Am7b5 | 3 | 5.3% |
Key Patterns Detected
| Pattern | Function | Frequency |
|---|---|---|
| Am7 -> D7 | Setup (Major Key) | 8 |
| Bm7 -> E7b9 | Setup (Major Key) | 4 |
| Bm7 -> E7 | Setup (Major Key) | 3 |
| E7 -> Am7 | Resolution (Minor) | 3 |
| E7b9 -> Am7b5 | Resolution (Minor) | 3 |
| Am7b5 -> D7b9 | Setup (Minor Key) | 2 |
| E7b9 -> Am7 | Resolution (Minor) | 2 |
| D7 -> Gmaj7 | Resolution (Major) | 2 |
| Dm7 -> G7 | Setup (Major Key) | 2 |
| G7 -> Cmaj7 | Resolution (Major) | 2 |
| D7b9 -> Gmaj7 | Resolution (Major) | 1 |
| Am7b5 -> D7b9#5 | Setup (Minor Key) | 1 |
| D7b9#5 -> Gmaj7 | Resolution (Major) | 1 |
Harmonic Highlights
- Standard I-vi-ii-V (Gmaj7-Em7-Am7-D7) establishes the primary G major tonality.
- Frequent secondary ii-V progressions (e.g., Bm7-E7 leading to Am) create temporary tonal centers.
- The progression Am7b5-D7b9 introduces a minor iiø7-V7b9, implying a momentary shift towards G minor or strong altered dominant function.
- Altered dominant chords like E7b9, D7b9, and B7#5 (V7 of Em) add harmonic tension and color.
Improvisation Focus Navigating major, minor, and altered dominant ii-V changes with appropriate scales and arpeggios.
Difficulty Rating 4 (Advanced Intermediate) - The blend of major, minor, and altered dominant ii-V progressions requires nuanced melodic and harmonic understanding.