Chord Distribution Analysis
| Chord Symbol | Count | Frequency |
|---|---|---|
| D7sus | 8 | 13.6% |
| Bb7 | 5 | 8.5% |
| Ebmaj7 | 5 | 8.5% |
| Gmaj7 | 4 | 6.8% |
| C7 | 4 | 6.8% |
| Bmaj7 | 3 | 5.1% |
| D7 | 3 | 5.1% |
| Gm7 | 3 | 5.1% |
Key Patterns Detected
| Pattern | Function | Frequency |
|---|---|---|
| Bb7 -> Ebmaj7 | Resolution (Major) | 5 |
| Fm7 -> Bb7 | Setup (Major Key) | 3 |
| Am7b5 -> D7b9 | Setup (Minor Key) | 3 |
| F#7 -> Bmaj7 | Resolution (Major) | 2 |
| D7 -> Gm7 | Resolution (Minor) | 2 |
| Gm7 -> C7 | Setup (Major Key) | 2 |
| C7 -> Fmaj7 | Resolution (Major) | 2 |
| Ab7 -> Dbmaj7 | Resolution (Major) | 2 |
| E7 -> Amaj7 | Resolution (Major) | 2 |
| C7 -> Fm7 | Resolution (Minor) | 2 |
| D7b9 -> Gmaj7 | Resolution (Major) | 2 |
| D7b9 -> Gm7 | Resolution (Minor) | 1 |
| D7 -> Gmaj7 | Resolution (Major) | 1 |
| Cm7 -> F7 | Setup (Major Key) | 1 |
Harmonic Highlights:
- Features rapid modulations through distantly related major keys, often cycling by major thirds (e.g., F#7-Bmaj7, Ab7-Dbmaj7, E7-Amaj7).
- Employs V7-I resolutions as primary drivers of harmonic movement, creating a sense of continuous, non-diatonic progression.
- The inclusion of Gmaj7 alongside the G minor key center suggests a complex tonic definition, typical of Coltrane’s adventurous harmony.
- A traditional iiø7-V7b9-i cadence (Am7b5-D7b9-Gm7) anchors the progression back to the G minor key center.
Improvisation Focus: Superimposing arpeggios and scales over each rapidly changing V7-I resolution, embracing major-third cycle concepts.
Difficulty Rating: 5 (Advanced). The constant, distant key changes and fast harmonic rhythm demand exceptional technical and theoretical command.