Chord Distribution Analysis
| Chord Symbol | Count | Frequency |
|---|---|---|
| Gm7 | 7 | 17.5% |
| Fm7 | 4 | 10.0% |
| Bb7sus | 4 | 10.0% |
| D7b9 | 4 | 10.0% |
| Ebmaj7 | 2 | 5.0% |
| Gb07 | 2 | 5.0% |
| Bbm7 | 2 | 5.0% |
| Eb7 | 2 | 5.0% |
Key Patterns Detected
| Pattern | Function | Frequency |
|---|---|---|
| D7b9 -> Gm7 | Resolution (Minor) | 4 |
| Gm7 -> D7b9 | Setup (Major Key) | 3 |
| Fm7 -> Bb7sus | Setup (Major Key) | 2 |
| Bbm7 -> Eb7 | Setup (Major Key) | 2 |
| Am7b5 -> D7b9 | Setup (Minor Key) | 1 |
| Gm7 -> C7 | Setup (Major Key) | 1 |
| Bb7sus -> Ebmaj7 | Resolution (Major) | 1 |
| Eb7 -> Abmaj7 | Resolution (Major) | 1 |
- Extensive use of secondary dominants and their related ii-V progressions, prominently targeting the vi chord (Gm7) with movements like Am7b5-D7b9-Gm7.
- Chromatic diminished chords (e.g., Gb07) function as passing chords, creating tension before resolving to a target chord a half step above its root.
- Brief but impactful tonicizations, such as the Bbm7-Eb7 sequence, momentarily implying Ab major as a new tonal center.
- Chaining of ii-V progressions, like Em7b5 - Am7b5 - D7b9, necessitates navigating successive temporary minor tonalities.
Improvisation Focus: The altered dominant scale, especially for the frequent D7b9 chords, is crucial for navigating the numerous minor ii-V progressions.
Difficulty Rating: 4 (Intermediate-Advanced). The rapid succession of minor ii-V-i progressions and altered dominants requires strong harmonic awareness and quick melodic adaptation.