Chord Distribution Analysis
| Chord Symbol | Count | Frequency |
|---|---|---|
| Db7 | 6 | 42.9% |
| Gb7 | 3 | 21.4% |
| Ebm7 | 2 | 14.3% |
| Ab7 | 2 | 14.3% |
| Bb7 | 1 | 7.1% |
Key Patterns Detected
| Pattern | Function | Frequency |
|---|---|---|
| Ebm7 -> Ab7 | Setup (Major Key) | 2 |
| Bb7 -> Ebm7 | Resolution (Minor) | 1 |
Harmonic Highlights:
- The progression prominently features a Dominant Tonic (I7), with Gb7 (F#7 enharmonically) serving as the key center, establishing a bluesy, dominant-heavy foundation.
- Frequent V7-I7 Dominant Cycling (Db7 to Gb7) reinforces the blues form, driving harmonic motion towards the tonic.
- A ii-V to the V chord (Ebm7-Ab7 resolving to Db7) provides temporary tonicization of the dominant, adding a common jazz reharmonization technique.
- Chromatic Secondary Dominant: The Bb7 (bIII7 or V7/Ebm7) introduces non-diatonic tension, typically functioning as a secondary dominant leading to Ebm7.
Improvisation Focus: F# Mixolydian is the single most important scale due to the pervasive dominant 7th chords, especially the I7.
Difficulty Rating: 3 (Intermediate). The blues structure is clear, but improvising effectively over the constant dominant 7ths, ii-V to V, and chromatic secondary dominants requires a nuanced harmonic understanding.