Chord Distribution Analysis
| Chord Symbol | Count | Frequency |
|---|---|---|
| Dm | 4 | 33.3% |
| E7#9 | 2 | 16.7% |
| A7b9 | 2 | 16.7% |
| Cm7 | 1 | 8.3% |
| F7 | 1 | 8.3% |
| Bbmaj7 | 1 | 8.3% |
| Db7 | 1 | 8.3% |
Key Patterns Detected
| Pattern | Function | Frequency |
|---|---|---|
| A7b9 -> Dm | Resolution (Minor) | 2 |
| Cm7 -> F7 | Setup (Major Key) | 1 |
| F7 -> Bbmaj7 | Resolution (Major) | 1 |
Harmonic Highlights
- The E7#9 - A7b9 - Dm progression establishes a V/V - V - I dominant chain in D minor, featuring altered dominant voicings.
- A distinct modulation occurs with the Cm7 - F7 - Bbmaj7 sequence, temporarily tonicizing Bb major (the bVI chord in D minor).
- The Db7 chord acts as a tritone substitute (for G7), implying backdoor dominant function or setting up further non-diatonic shifts.
Improvisation Focus The Altered Scale (Superlocrian) for navigating the complex dominant chords.
Difficulty Rating 5 (Advanced) – The frequent use of altered dominants and modulations requires a sophisticated understanding of jazz harmony and scale application.