Chord Distribution Analysis
| Chord Symbol | Count | Frequency |
|---|---|---|
| Fm9 | 18 | 39.1% |
| Bb13 | 12 | 26.1% |
| Db9 | 4 | 8.7% |
| C7#9 | 4 | 8.7% |
| Bbm7 | 1 | 2.2% |
| Eb7 | 1 | 2.2% |
| Abmaj7 | 1 | 2.2% |
| Db7 | 1 | 2.2% |
Key Patterns Detected
| Pattern | Function | Frequency |
|---|---|---|
| C7#9 -> Fm9 | Resolution (Minor) | 2 |
| Fm9 -> C7#9 | Setup (Major Key) | 2 |
| Bbm7 -> Eb7 | Setup (Major Key) | 1 |
| Eb7 -> Abmaj7 | Resolution (Major) | 1 |
| Abmaj7 -> Db7 | Setup (Major Key) | 1 |
| Db7 -> Gbmaj7 | Resolution (Major) | 1 |
| Gm7b5 -> C7b5b9 | Setup (Minor Key) | 1 |
| C7b5b9 -> Fm9 | Resolution (Minor) | 1 |
Harmonic Highlights
- The primary progression repeatedly features Fm9 to Bb13, functioning as a ii-V in Eb major, creating a persistent temporary tonicization away from the F major key center.
- A strong minor cadence is established with Db9 to C7#9, acting as a bVI-V in F minor, resolving convincingly to Fm9.
- The initial Fm9 chord, despite the F major key center, establishes a minor-mode tonality, utilizing modal interchange extensively throughout the form.
- Frequent use of altered dominants like Bb13 and C7#9 adds tension and color, enriching the harmonic palette.
Improvisation Focus: F Dorian scale (adapting to specific dominant alterations).
Difficulty Rating: 4 (Advanced). The harmonic rhythm is challenging, requiring quick adaptation to frequent modal shifts, non-diatonic dominant functions, and implied minor tonicizations.