Chord Distribution Analysis
| Chord Symbol | Count | Frequency |
|---|---|---|
| Bb7 | 10 | 23.3% |
| Fm7 | 8 | 18.6% |
| Cm7 | 6 | 14.0% |
| Ebmaj7 | 5 | 11.6% |
| Db7 | 3 | 7.0% |
| C7 | 2 | 4.7% |
| B7 | 2 | 4.7% |
| Eb6 | 2 | 4.7% |
Key Patterns Detected
| Pattern | Function | Frequency |
|---|---|---|
| Fm7 -> Bb7 | Setup (Major Key) | 8 |
| Bb7 -> Ebmaj7 | Resolution (Major) | 4 |
| Bb7 -> Fm7 | Resolution (Minor) | 1 |
| Abm7 -> Db7 | Setup (Major Key) | 1 |
| Db7 -> Gbmaj7 | Resolution (Major) | 1 |
Harmonic Highlights:
- Standard I-vi-ii-V progression (Ebmaj7-Cm7-Fm7-Bb7) firmly establishes the tonic.
- A striking chromatic dominant descent (Db7-C7-B7-Bb7) generates strong tension, employing secondary dominants and tritone substitutions.
- The concluding A7#11 chord introduces a sharp, non-diatonic departure, suggesting an advanced tritone substitution for Eb7 or a V7/D.
Improvisation Focus: Dominant 7th scales (Mixolydian) and their common alterations.
Difficulty Rating: 4 (Advanced Intermediate) - The blend of diatonic progressions with complex chromatic dominants and altered chords requires a solid grasp of functional harmony and dominant scale variations.