Chord Distribution Analysis
| Chord Symbol | Count | Frequency |
|---|---|---|
| Ebmaj7 | 5 | 45.5% |
| Db7 | 4 | 36.4% |
| Am7 | 1 | 9.1% |
| D7 | 1 | 9.1% |
Key Patterns Detected
| Pattern | Function | Frequency |
|---|---|---|
| Am7 -> D7 | Setup (Major Key) | 1 |
Harmonic Highlights:
- Recurring use of the bVII7 chord (Db7) resolving to the tonic Ebmaj7, creating a distinctive ‘backdoor’ dominant sound.
- The dominant bVII7 (Db7) establishes a strong modal and bluesy character, often blurring the line between Eb major and Eb Mixolydian.
- Temporary departure from the tonic key through the non-diatonic ii-V progression (Am7-D7), adding harmonic tension and color before returning to Ebmaj7.
Improvisation Focus: The ‘backdoor dominant’ harmonic concept, emphasizing the b7 (Db) over the tonic Eb.
Difficulty Rating: 4 (Advanced Intermediate) - The blend of modal harmony, non-diatonic changes, and quick modulations requires sophisticated harmonic understanding.