Chord Distribution Analysis
| Chord Symbol | Count | Frequency |
|---|---|---|
| Bbmaj7 | 4 | 10.8% |
| E7 | 3 | 8.1% |
| Em7b5 | 3 | 8.1% |
| A7 | 3 | 8.1% |
| Cm7b5 | 3 | 8.1% |
| Eb7 | 2 | 5.4% |
| D7 | 2 | 5.4% |
| Dm7b5 | 2 | 5.4% |
Key Patterns Detected
| Pattern | Function | Frequency |
|---|---|---|
| Em7b5 -> A7 | Setup (Minor Key) | 3 |
| Dm7b5 -> G7b9 | Setup (Minor Key) | 2 |
| G7b9 -> Cm7b5 | Resolution (Minor) | 2 |
| F#m7 -> B7 | Setup (Major Key) | 1 |
| Bm7 -> E7 | Setup (Major Key) | 1 |
| E7 -> Amaj7 | Resolution (Major) | 1 |
| A7 -> Dmaj7 | Resolution (Major) | 1 |
| Cm7b5 -> F7 | Setup (Minor Key) | 1 |
| F7 -> Bbmaj7 | Resolution (Major) | 1 |
| Bbmaj7 -> F7sus | Setup (Major Key) | 1 |
| F7sus -> Bbmaj7 | Resolution (Major) | 1 |
| Bbmaj7 -> F7 | Setup (Major Key) | 1 |
Harmonic Highlights:
- Chromatic Dominant Exploration: Frequent use of tritone substitutions (Eb7 for A7) and secondary dominants (E7 to A) to propel harmonic motion, often chromatically.
- Cascading ii-V Progressions: A rapid succession of ii-V progressions (e.g., Em7b5-A7, Dm7b5-G7b9) consistently shifts temporary tonal centers, often targeting minor keys.
- Non-Diatonic Major 7ths: Integration of unexpected major 7th chords (Bbmaj7, Emaj7, Amaj7 in context) creates sophisticated color and remote modulations away from the D major key center.
Improvisation Focus: Chord tones and targeted arpeggios for navigating constant modulations.
Difficulty Rating: 5 (Advanced). The dense chromaticism and rapid shifts between multiple temporary key centers demand a deep harmonic understanding.