Chord Distribution Analysis
| Chord Symbol | Count | Frequency |
|---|---|---|
| Eb7 | 11 | 27.5% |
| Bbm7 | 9 | 22.5% |
| Fm7 | 4 | 10.0% |
| Bb7 | 3 | 7.5% |
| Eb6 | 2 | 5.0% |
| F9 | 2 | 5.0% |
| Eb07 | 2 | 5.0% |
| Ebmaj7 | 1 | 2.5% |
Key Patterns Detected
| Pattern | Function | Frequency |
|---|---|---|
| Bbm7 -> Eb7 | Setup (Major Key) | 9 |
| Eb7 -> Bbm7 | Resolution (Minor) | 8 |
| Fm7 -> Bb7 | Setup (Major Key) | 1 |
| Bb7 -> Ebmaj7 | Resolution (Major) | 1 |
| Fm7 -> C7b13 | Setup (Major Key) | 1 |
| Fm7 -> C7 | Setup (Major Key) | 1 |
- Clear deployment of ii-V-I progressions in the tonic key (Fm7-Bb7-Eb).
- A sophisticated secondary dominant sequence: C7b13 (V/F) -> F9 (V/Bb) -> Bb7 (V/Eb), showcasing strong functional harmony leading to the dominant.
- Persistent use of the Bbm7-Eb7 (ii-V of Ab) progression, implying motion towards the subdominant (IV) or employing a “backdoor” dominant sound.
Improvisation Focus: Navigating complex ii-V progressions and their alterations, particularly targeting chord tones and scale choices (e.g., Altered or Lydian Dominant for C7b13, Mixolydian for F9/Bb7, Dorian for Fm7/Bbm7).
Difficulty Rating: 3 (Intermediate) The frequent changes, secondary dominants, and specific altered chords like C7b13 require a solid understanding of functional harmony and advanced scale applications.