Chord Distribution Analysis
| Chord Symbol | Count | Frequency |
|---|---|---|
| Ebm/maj7 | 9 | 16.7% |
| Ab7 | 5 | 9.3% |
| Abm7 | 4 | 7.4% |
| Eb7#9 | 3 | 5.6% |
| B13 | 3 | 5.6% |
| B7 | 3 | 5.6% |
| A7#11 | 2 | 3.7% |
| Db9sus | 2 | 3.7% |
Key Patterns Detected
| Pattern | Function | Frequency |
|---|---|---|
| Ebm/maj7 -> Ab7 | Setup (Major Key) | 4 |
| Ab7 -> Ebm/maj7 | Resolution (Major) | 2 |
| Emaj9 -> A7#11 | Setup (Major Key) | 1 |
| Eb7 -> Abm7 | Resolution (Minor) | 1 |
| Fm7b5 -> Bb7#5#9 | Setup (Minor Key) | 1 |
| B7 -> Emaj7 | Resolution (Major) | 1 |
| B7 -> Emaj7#11 | Resolution (Major) | 1 |
| Bb7b13 -> Ebm/maj7 | Resolution (Major) | 1 |
| Cm7b5 -> F7#5#9 | Setup (Minor Key) | 1 |
| Bb7 -> Ebm/maj7 | Resolution (Major) | 1 |
| Emaj7#11 -> A7#11 | Setup (Major Key) | 1 |
Harmonic Highlights
- Frequent use of non-functional dominant 7th chords with complex extensions (#11, #9) that create a chromatic, “melting” harmonic landscape.
- Tritone substitutions and unexpected root movements (e.g., A7#11 to Db9sus) obscure the G# minor tonic, resulting in highly ambiguous tonal gravity.
- The progression functions as a sophisticated reharmonization of a 12-bar blues, utilizing parallel dominant motion and elongated ii-V sequences to delay resolution.
Improvisation Focus
Chord-tone targeting (guide tones) combined with the G# blues scale to maintain melodic cohesion amidst the dense chromaticism.
Difficulty Rating
5/5: The lack of standard diatonic anchors and the non-intuitive voice leading require an advanced mastery of melodic minor modes and chromatic substitution.