Chord Distribution Analysis
| Chord Symbol | Count | Frequency |
|---|---|---|
| Bbm7 | 6 | 10.3% |
| Eb7 | 6 | 10.3% |
| Ab7 | 6 | 10.3% |
| Dbmaj7 | 4 | 6.9% |
| Fm7b5 | 4 | 6.9% |
| Bb7b9 | 4 | 6.9% |
| Ebm7 | 4 | 6.9% |
| A7 | 4 | 6.9% |
Key Patterns Detected
| Pattern | Function | Frequency |
|---|---|---|
| Fm7b5 -> Bb7b9 | Setup (Minor Key) | 4 |
| Ebm7 -> Ab7 | Setup (Major Key) | 4 |
| Ab7 -> Dbmaj7 | Resolution (Major) | 3 |
| Cm7b5 -> F7b9 | Setup (Minor Key) | 2 |
| F7b9 -> Bbm7 | Resolution (Minor) | 2 |
| Bb7b9 -> Fm7b5 | Resolution (Minor) | 2 |
| Bbm7 -> Eb7 | Setup (Major Key) | 2 |
| Dbmaj7 -> Ab7 | Setup (Major Key) | 1 |
| Eb7 -> Bbm7 | Resolution (Minor) | 1 |
| Em7 -> A7 | Setup (Major Key) | 1 |
Harmonic Highlights
- Employs standard minor ii-V-i progressions (Cm7b5-F7b9-Bbm7) to establish the somber, ballad-like tonic center of Bb minor.
- Utilizes a descending chromatic bass line (Bbm7-Bbm7/Ab-Gm7b5-Gb7#11), where the Gb7#11 serves as a tritone substitute (subV/V) for smooth voice leading.
- Navigates the relationship between Bb minor and its relative major (Db) using ii-V sequences (Ebm7-Ab7-Dbmaj7) to brighten the tonal color.
- Integrates secondary dominants (Bb7b9) to target the IV chord (Eb7 or Ebm7), creating internal tension before returning to the tonic.
Improvisation Focus
Bb Harmonic Minor (specifically emphasizing the F7b9 dominant resolution).
Difficulty Rating
3/5: While the ballad tempo is forgiving, the performer must master minor ii-V-i vocabulary and navigate frequent shifts to the relative major.