Chord Distribution Analysis
| Chord Symbol | Count | Frequency |
|---|---|---|
| C7 | 11 | 32.4% |
| F7 | 4 | 11.8% |
| G7#9 | 3 | 8.8% |
| Dm7 | 3 | 8.8% |
| A7#9 | 2 | 5.9% |
| Abmaj7 | 2 | 5.9% |
| G7 | 2 | 5.9% |
| A7 | 2 | 5.9% |
Key Patterns Detected
| Pattern | Function | Frequency |
|---|---|---|
| Dm7 -> G7 | Setup (Major Key) | 2 |
| G7#9 -> Dm7 | Resolution (Minor) | 1 |
| Em7 -> A7b9 | Setup (Major Key) | 1 |
| A7b9 -> Dm7 | Resolution (Minor) | 1 |
| Dm7 -> G7b9 | Setup (Major Key) | 1 |
| A7 -> Dm7 | Resolution (Minor) | 1 |
Harmonic Highlights:
- The persistent use of C7 (I7) as tonic establishes a blues-infused harmonic foundation rather than a simple Cmaj7.
- Sophisticated chromatic movements, such as A7#9 – Abmaj7 – G7#9, introduce altered dominants and non-diatonic major chords with descending root motion.
- Extended cycle of fifths progressions, like E7-A7-Dm7-G7, showcase functional harmony with sequential secondary dominants.
- Frequent application of altered dominant chords (e.g., #9, b9) throughout the form provides rich tension and color.
Improvisation Focus: Mastery of altered dominant scales (e.g., Altered Scale, Whole-Half Diminished) to fully exploit the harmonic tension.
Difficulty Rating: 4 (Advanced Intermediate). The blend of bluesy I7, complex altered dominants, and extended cycle of fifths progressions requires a sophisticated harmonic understanding.