Chord Distribution Analysis
| Chord Symbol | Count | Frequency |
|---|---|---|
| Dm7 | 5 | 11.9% |
| Db7 | 5 | 11.9% |
| Cm7 | 5 | 11.9% |
| B7#11 | 5 | 11.9% |
| Ab7 | 3 | 7.1% |
| Fm7 | 2 | 4.8% |
| Bb7 | 2 | 4.8% |
| Ebmaj7 | 2 | 4.8% |
Key Patterns Detected
| Pattern | Function | Frequency |
|---|---|---|
| Fm7 -> Bb7 | Setup (Major Key) | 2 |
| Bb7 -> Ebmaj7 | Resolution (Major) | 2 |
| Ebmaj7 -> Ab7 | Setup (Major Key) | 2 |
| Ebm7 -> Ab7 | Setup (Major Key) | 1 |
| Ab7 -> Dbmaj7 | Resolution (Major) | 1 |
| C#m7 -> F#7 | Setup (Major Key) | 1 |
| F#7 -> Bmaj7 | Resolution (Major) | 1 |
| Cm7b5 -> F7 | Setup (Minor Key) | 1 |
Harmonic Highlights:
- The recurring
Dm7, Db7, Cm7, B7#11sequence features a prominent chromatic root descent (D-Db-C-B) utilizing minor 7th and tritone-substituted dominant #11 chords, generating significant tension. - Frequent use of non-diatonic chords, such as
Db7(bII7) andB7#11(bIII7b5), extends the tonality, introducing temporary shifts and color through tritone substitution. - Standard ii-V-I progressions are re-contextualized, as seen in
Fm7-Bb7-Ebmaj7-Ab7, modulating to the dominant’s key before preparing for the subdominant. - Momentary modulations to distant major keys, like Db major via
Ebm7-Ab7-Dbmaj7, momentarily obscure the Ab major tonic and enrich the harmonic landscape.
Improvisation Focus: Horizontal improvisation emphasizing chord tones and altered dominant scales over temporary modulations.
Difficulty Rating: 4 (Advanced Intermediate) The rapid harmonic rhythm and frequent non-diatonic chords demand agile chord-scale knowledge and precise melodic contour.