Chord Distribution Analysis
| Chord Symbol | Count | Frequency |
|---|---|---|
| Bbmaj7 | 9 | 26.5% |
| C7 | 6 | 17.6% |
| F7 | 5 | 14.7% |
| Cm7 | 4 | 11.8% |
| Gm7 | 3 | 8.8% |
| G7 | 2 | 5.9% |
| Em7b5 | 1 | 2.9% |
| A7b9 | 1 | 2.9% |
Key Patterns Detected
| Pattern | Function | Frequency |
|---|---|---|
| F7 -> Bbmaj7 | Resolution (Major) | 5 |
| Cm7 -> F7 | Setup (Major Key) | 4 |
| G7 -> Cm7 | Resolution (Minor) | 2 |
| Gm7 -> C7 | Setup (Major Key) | 2 |
| Em7b5 -> A7b9 | Setup (Minor Key) | 1 |
| A7b9 -> Dm7 | Resolution (Minor) | 1 |
Harmonic Highlights:
- The frequent use of G7 (V7/ii) and C7 (V7/V) as secondary dominants extends the diatonic harmony.
- A clear minor ii-V-I progression (Em7b5-A7b9-Dm7) briefly tonicizes D minor.
- The Db7 functions as a tritone substitution (SubV7) for G7, providing a chromatic dominant pull.
Improvisation Focus: Chord-scale theory applied to dominant functions (Mixolydian, altered scales).
Difficulty Rating: 3 (Intermediate) – It features common jazz vocabulary like secondary dominants, minor ii-V-I progressions, and a tritone substitution, requiring a broader harmonic understanding than basic diatonic playing.