Chord Distribution Analysis
| Chord Symbol | Count | Frequency |
|---|---|---|
| Bbm7 | 8 | 22.9% |
| Eb7 | 8 | 22.9% |
| Ab6 | 5 | 14.3% |
| Cm7 | 2 | 5.7% |
| F7 | 2 | 5.7% |
| Bbm7b5 | 2 | 5.7% |
| Fm6 | 2 | 5.7% |
| B7 | 1 | 2.9% |
Key Patterns Detected
| Pattern | Function | Frequency |
|---|---|---|
| Bbm7 -> Eb7 | Setup (Major Key) | 5 |
| Eb7 -> Bbm7 | Resolution (Minor) | 3 |
| Cm7 -> F7 | Setup (Major Key) | 2 |
| F7 -> Bbm7 | Resolution (Minor) | 2 |
| Bbm7b5 -> Eb7 | Setup (Minor Key) | 2 |
| C7b9 -> Fm6 | Resolution (Minor) | 1 |
| Fm6 -> Bb7 | Setup (Major Key) | 1 |
| Bbm7/Eb -> Eb7 | Setup (Major Key) | 1 |
- Frequent tonicization of the bVII major (Ab6) via ii-V (Bbm7-Eb7) progressions, adding a brighter contrasting major tonality.
- A distinctive B7 chord introduces a jarring chromatic dominant, briefly suspending functional harmony before returning to the tonic minor.
- Strong emphasis on the dominant minor (Fm) through classic V7b9-i and vii°7-i progressions, solidifying the sub-key.
- The use of Bbm7b5 leading to Eb7, a iiø7-V7 in Ab minor, hints at further modulatory depth within the progression.
Improvisation Focus: Bb harmonic minor scale, with awareness of major scale sounds over Ab6.
Difficulty Rating: 4 (Advanced Intermediate). The chromatic B7 chord and frequent shifts between minor and major tonal centers demand advanced harmonic understanding and improvisational flexibility.