Chord Distribution Analysis
| Chord Symbol | Count | Frequency |
|---|---|---|
| B7 | 4 | 20.0% |
| A7 | 4 | 20.0% |
| G | 3 | 15.0% |
| E7 | 3 | 15.0% |
| D7 | 2 | 10.0% |
| Em | 1 | 5.0% |
| C7 | 1 | 5.0% |
| C | 1 | 5.0% |
Key Patterns Detected
| Pattern | Function | Frequency |
|---|---|---|
| B7 -> Em | Resolution (Minor) | 1 |
| Em -> A7 | Setup (Major Key) | 1 |
Harmonic Highlights:
- A prominent descending cycle of dominant 7ths (E7-A7-D7) creates strong harmonic momentum, temporarily targeting G (bIII).
- Frequent secondary dominants like E7 (V7/iv) and A7 (V7/D) drive the harmonic progression, adding tension and movement.
- The C#07 diminished chord provides chromatic voice leading, acting as a vii°7/D, often preceding D7 or a resolution to G.
- The interplay between the E minor tonic and the prominent G major (bIII) gives the standard a blues-inflected character.
Improvisation Focus: Navigating Mixolydian modes over the extensive secondary dominant cycles is crucial.
Difficulty Rating: 3 (Intermediate). The rapid succession of secondary dominants, including a descending V7 cycle, and the diminished chord demand solid understanding of temporary key centers and scale application.