Chord Distribution Analysis
| Chord Symbol | Count | Frequency |
|---|---|---|
| Bbm7 | 5 | 11.6% |
| F7 | 5 | 11.6% |
| Cm7 | 5 | 11.6% |
| C7#5#9 | 4 | 9.3% |
| Eb7sus | 2 | 4.7% |
| Eb7b9 | 2 | 4.7% |
| Ab07 | 2 | 4.7% |
| Abmaj7 | 2 | 4.7% |
Key Patterns Detected
| Pattern | Function | Frequency |
|---|---|---|
| Cm7 -> F7 | Setup (Major Key) | 3 |
| Bbm7 -> Eb7sus | Setup (Major Key) | 2 |
| F7 -> Cm7 | Resolution (Minor) | 2 |
| F7 -> Bbm7 | Resolution (Minor) | 2 |
| Bbm7 -> Eb7 | Setup (Major Key) | 2 |
| Gm7b5 -> C7b13 | Setup (Minor Key) | 1 |
| C7b13 -> Fm7 | Resolution (Minor) | 1 |
| Fm7 -> Bb7 | Setup (Major Key) | 1 |
| Cm7b5 -> F7b9 | Setup (Minor Key) | 1 |
| F7b9 -> Bbm7 | Resolution (Minor) | 1 |
| Dbm7 -> Gb7 | Setup (Major Key) | 1 |
Harmonic Highlights:
- Features frequent use of altered dominant chords like Eb7b9, C7#5#9, C7b13, and F7b9, adding significant harmonic tension.
- Includes a strong secondary dominant chain (C7#5#9 - F7 - Bbm7), creating a V/V of the ii-chord.
- Tonicizes the vi minor chord (Fm) via a clear minor ii-V-i progression (Gm7b5-C7b13-Fm7).
- Employs an unusual Ab07 chord, likely functioning as a chromatic passing diminished for tension or reharmonization.
Improvisation Focus: Altered dominant scales (e.g., Super Locrian, Phrygian Dominant) over the numerous dominant chords.
Difficulty Rating: 4 (Advanced). The rapid chord changes, extensive alterations, and transient modulations demand a sophisticated harmonic understanding.