Chord Distribution Analysis
| Chord Symbol | Count | Frequency |
|---|---|---|
| Bbm7 | 10 | 27.8% |
| Gb13 | 8 | 22.2% |
| Eb7 | 5 | 13.9% |
| E7#11 | 3 | 8.3% |
| Db7#11 | 2 | 5.6% |
| Gb/C | 2 | 5.6% |
| F7#5 | 2 | 5.6% |
| Abm7 | 1 | 2.8% |
Key Patterns Detected
| Pattern | Function | Frequency |
|---|---|---|
| F7#5 -> Bbm7 | Resolution (Minor) | 2 |
| Abm7 -> Db7 | Setup (Major Key) | 1 |
- The opening features a non-functional, chromatically descending sequence of dominant 7th chords (E7#11, Eb7, Db7#11), frequently employing the #11 extension.
- The Gb/C chord introduces significant polytonal tension and ambiguity, potentially implying a complex altered dominant (C7alt) or an upper structure voicing over a pedal.
- Extensive use of altered dominants, such as F7#5 and E7#11, highlights a highly chromatic and non-diatonic harmonic language that challenges traditional V-I expectations.
- The progression often resolves to Bbm7 (bVIm7 of F#), followed by an alternation with the tonic Gb13, creating sophisticated shifts between minor and major tonal centers.
Improvisation Focus: Proficient application of Altered Scales (e.g., Lydian Dominant, Altered) to navigate the frequently shifting and non-diatonic dominant sonorities.
Difficulty Rating: 5 (Advanced) This standard presents significant challenges due to its rapid chromatic shifts, frequent use of altered dominant harmonies, and polytonal implications.