Chord Distribution Analysis
| Chord Symbol | Count | Frequency |
|---|---|---|
| Am6 | 2 | 9.5% |
| E7b9/G# | 2 | 9.5% |
| Bm7b5 | 2 | 9.5% |
| E7b9 | 2 | 9.5% |
| C7 | 2 | 9.5% |
| F6 | 2 | 9.5% |
| Gm6 | 1 | 4.8% |
| Am7 | 1 | 4.8% |
Key Patterns Detected
| Pattern | Function | Frequency |
|---|---|---|
| Am6 -> E7b9/G# | Setup (Major Key) | 1 |
| E7b9/G# -> Bm7b5 | Resolution (Minor) | 1 |
| Bm7b5 -> E7b9/G# | Setup (Minor Key) | 1 |
| Am7 -> D7 | Setup (Major Key) | 1 |
| C7 -> Gm7 | Resolution (Minor) | 1 |
| Gm7 -> C7 | Setup (Major Key) | 1 |
| F#m7b5 -> B7b9 | Setup (Minor Key) | 1 |
| B7b9 -> Em7b5 | Resolution (Minor) | 1 |
| Em7b5 -> A7b9 | Setup (Minor Key) | 1 |
| A7b9 -> Dm7b5 | Resolution (Minor) | 1 |
| Bm7b5 -> E7b9 | Setup (Minor Key) | 1 |
Harmonic Highlights:
- Am6-E7b9/G# establishes the tonic minor with a leading tone bass, a signature sound of the Bossa Nova genre.
- A clear modulation to F major is achieved through a Gm7-C7-F6 ii-V-I progression, shifting the harmonic center.
- The piece frequently employs chromatically descending iiø-V7 cycles (e.g., F#m7b5-B7b9, Em7b5-A7b9), requiring agile chord-scale transitions.
- The use of Gm6 as a bVII minor chord introduces a distinct, melancholic color, often preceding further harmonic movement.
Improvisation Focus: Navigating ii-V changes across multiple, transient key centers is paramount.
Difficulty Rating: 4 (Advanced). The frequent modulations and rapid ii-V changes require sophisticated harmonic understanding and agile improvisation.