Chord Distribution Analysis
| Chord Symbol | Count | Frequency |
|---|---|---|
| Em7b5 | 8 | 19.0% |
| A7b9 | 8 | 19.0% |
| Dm | 6 | 14.3% |
| Gm7 | 4 | 9.5% |
| C7 | 4 | 9.5% |
| Fmaj7 | 4 | 9.5% |
| Eb7#11 | 2 | 4.8% |
| Db7#11 | 2 | 4.8% |
Key Patterns Detected
| Pattern | Function | Frequency |
|---|---|---|
| Em7b5 -> A7b9 | Setup (Minor Key) | 6 |
| A7b9 -> Dm | Resolution (Minor) | 5 |
| Gm7 -> C7 | Setup (Major Key) | 4 |
| C7 -> Fmaj7 | Resolution (Major) | 4 |
Harmonic Highlights:
- Consistent establishment of D minor tonality through recurring i-iiø7-V7b9 progressions, solidifying the home key.
- Strategic incorporation of tritone substitutions (Eb7#11, Db7#11) adds sophisticated chromaticism and dominant tension, expanding beyond diatonic harmony.
- Frequent shifts to the relative major (Fmaj7 via Gm7-C7) provide melodic relief and a common jazz harmonic movement.
- The Bb7 chord introduces a non-diatonic dominant, hinting at blues influences or temporary tonal ambiguity.
Improvisation Focus: D Harmonic Minor scale.
Difficulty Rating: 4 (Advanced Intermediate) - The piece incorporates advanced dominant alterations (b9, #11) and relative major modulations, requiring a nuanced understanding of jazz harmony.