Chord Distribution Analysis
| Chord Symbol | Count | Frequency |
|---|---|---|
| Bb7 | 8 | 17.8% |
| Bbm7 | 7 | 15.6% |
| Ebm7 | 6 | 13.3% |
| F7 | 5 | 11.1% |
| Dbmaj7 | 3 | 6.7% |
| Eb7 | 3 | 6.7% |
| Abm7 | 2 | 4.4% |
| Db7 | 2 | 4.4% |
Key Patterns Detected
| Pattern | Function | Frequency |
|---|---|---|
| Bb7 -> Ebm7 | Resolution (Minor) | 6 |
| F7 -> Bbm7 | Resolution (Minor) | 5 |
| Bbm7 -> F7 | Setup (Major Key) | 4 |
| Ebm7 -> Bb7 | Setup (Major Key) | 4 |
| Abm7 -> Db7 | Setup (Major Key) | 2 |
| Fm7 -> Bb7 | Setup (Major Key) | 1 |
| Eb7 -> Bbm7 | Resolution (Minor) | 1 |
| Bbm7 -> Eb7 | Setup (Major Key) | 1 |
| Ab7 -> Dbmaj7 | Resolution (Major) | 1 |
| Cm7b5 -> F7b9 | Setup (Minor Key) | 1 |
- The opening Bbm7-F7 progression is an atypical movement, suggesting a temporary minor tonic (Bbm) with a non-diatonic dominant or an extended V/vi, challenging direct tonic orientation.
- Frequent use of secondary dominant functions (e.g., Bb7 to Ebm7, Eb7) and extended ii-V progressions (Abm7-Db7 for Gb, Fm7-Bb7 for Eb).
- A sequence of dominant 7th chords (Gb7, B7) creates rapid, often tritone-related harmonic tension before resolving to the tonic Dbmaj7.
Improvisation Focus: Navigating rapid, successive modulations and complex dominant-resolutions.
Difficulty Rating: 5 (Advanced) - The constant modulations, secondary dominants, and non-standard progressions demand a high level of harmonic agility.