Chord Distribution Analysis
| Chord Symbol | Count | Frequency |
|---|---|---|
| Gm7 | 7 | 12.7% |
| C7 | 5 | 9.1% |
| Fmaj7 | 4 | 7.3% |
| Bb7 | 4 | 7.3% |
| Am7 | 4 | 7.3% |
| Ab07 | 3 | 5.5% |
| Dm7 | 3 | 5.5% |
| Em7b5 | 2 | 3.6% |
Key Patterns Detected
| Pattern | Function | Frequency |
|---|---|---|
| Gm7 -> C7 | Setup (Major Key) | 5 |
| Fmaj7 -> Bb7 | Setup (Major Key) | 3 |
| C7 -> Fmaj7 | Resolution (Major) | 2 |
| Am7b5 -> D7b13 | Setup (Minor Key) | 1 |
| D7b13 -> Gm7 | Resolution (Minor) | 1 |
| Bm7b5 -> E7b9 | Setup (Minor Key) | 1 |
| E7b9 -> Amaj7 | Resolution (Major) | 1 |
| Bm7 -> E7 | Setup (Major Key) | 1 |
| E7 -> Amaj7 | Resolution (Major) | 1 |
| Cm7 -> F7 | Setup (Major Key) | 1 |
| F7 -> Bbmaj7 | Resolution (Major) | 1 |
| Bbmaj7 -> Eb7 | Setup (Major Key) | 1 |
| Abm7 -> Db7 | Setup (Major Key) | 1 |
| Em7b5 -> A7b9 | Setup (Minor Key) | 1 |
| A7b9 -> Dm7 | Resolution (Minor) | 1 |
| Dm7 -> G7 | Setup (Major Key) | 1 |
Harmonic Highlights:
- Frequent tonicization of the relative major (Fmaj7) via its ii-V (Gm7-C7), alongside minor ii-V-i progressions (Am7b5-D7b13 to Gm7) momentarily tonicizing the subdominant.
- Strategic use of tritone substitutions (Eb7 for A7) and diminished passing chords (Ab07) adding chromaticism to dominant functions and voice leading.
- The progression features both direct minor ii-V (Em7b5-A7b9) resolutions to D minor and extended harmonic detours.
Improvisation Focus: D Harmonic Minor scale and related altered dominant scales (e.g., D altered scale over Eb7, A altered scale over A7b9).
Difficulty Rating: 4 (Advanced Intermediate) because of the frequent modulations, chromatic substitutions, and nuanced minor ii-V-i progressions requiring precise scale choices.