Chord Distribution Analysis
| Chord Symbol | Count | Frequency |
|---|---|---|
| Bbm7 | 10 | 20.0% |
| Gm7b5 | 8 | 16.0% |
| F7b9 | 6 | 12.0% |
| Bbm7/Ab | 4 | 8.0% |
| Bbm7/F | 4 | 8.0% |
| Cm7b5 | 4 | 8.0% |
| Ab7 | 4 | 8.0% |
| Gb7 | 4 | 8.0% |
Key Patterns Detected
| Pattern | Function | Frequency |
|---|---|---|
| F7b9 -> Bbm7 | Resolution (Minor) | 6 |
| Cm7b5 -> F7b9 | Setup (Minor Key) | 2 |
| Cm7b5 -> F7 | Setup (Minor Key) | 2 |
| F7 -> Bbm7 | Resolution (Minor) | 2 |
Harmonic Highlights:
- Frequent iiø7-V7b9-i progressions (Cm7b5-F7b9-Bbm7) firmly establish the Bb minor tonic.
- Prominent descending bass movement within the tonic (Bbm7 to Bbm7/Ab) provides subtle internal voice leading.
- Inclusion of chromatic dominant cycles (Ab7, Gb7) and non-functional diminished chords (E07) adds characteristic tension and harmonic color.
Improvisation Focus: Bb Harmonic Minor scale.
Difficulty Rating: 4 (Advanced Intermediate) - The consistent ii-V-i is standard, but chromatic passing diminished chords and descending dominant cycles require nuanced harmonic understanding.