Chord Distribution Analysis
| Chord Symbol | Count | Frequency |
|---|---|---|
| Bbm7 | 4 | 14.3% |
| Eb7#5 | 3 | 10.7% |
| Abmaj7 | 3 | 10.7% |
| Bb7 | 3 | 10.7% |
| Cm7 | 2 | 7.1% |
| F7 | 2 | 7.1% |
| Eb7 | 2 | 7.1% |
| Ab7 | 2 | 7.1% |
Key Patterns Detected
| Pattern | Function | Frequency |
|---|---|---|
| Bbm7 -> Eb7#5 | Setup (Major Key) | 2 |
| Eb7#5 -> Abmaj7 | Resolution (Major) | 2 |
| Cm7 -> F7 | Setup (Major Key) | 2 |
| F7 -> Bbm7 | Resolution (Minor) | 2 |
| Bbm7 -> Eb7 | Setup (Major Key) | 2 |
| Bb7 -> Fm7 | Resolution (Minor) | 2 |
| Fm7 -> Bb7 | Setup (Major Key) | 2 |
| Ab7 -> Ebm7 | Resolution (Minor) | 1 |
| Ebm7 -> Ab7 | Setup (Major Key) | 1 |
| Ab7 -> Dbmaj7 | Resolution (Major) | 1 |
| Eb7#5 -> Bbm7 | Resolution (Minor) | 1 |
| Eb7 -> Abmaj7 | Resolution (Major) | 1 |
Harmonic Highlights:
- Prominent use of the Eb7#5 chord, providing an altered dominant sound that resolves strongly to the tonic Abmaj7.
- Frequent tonicization of the IV chord (Dbmaj7) through its ii-V progression (Ebm7-Ab7).
- Sequential ii-V movements, such as Cm7-F7 acting as a ii-V of Bbm7, extending dominant function.
- The Ab7 chord functions as a secondary dominant (V/Db), facilitating the tonicization of the IV chord.
Improvisation Focus: Altered scale for dominant chords with altered extensions (e.g., Eb7#5).
Difficulty Rating: 3 (Intermediate) – Requires a solid understanding of secondary dominants, altered dominant scales, and navigating tonicizations.