Chord Distribution Analysis
| Chord Symbol | Count | Frequency |
|---|---|---|
| D7 | 10 | 18.2% |
| Gm7 | 9 | 16.4% |
| C7 | 8 | 14.5% |
| G7 | 5 | 9.1% |
| Am7 | 5 | 9.1% |
| F6 | 3 | 5.5% |
| Eb7 | 3 | 5.5% |
| Bb7 | 2 | 3.6% |
Key Patterns Detected
| Pattern | Function | Frequency |
|---|---|---|
| Gm7 -> C7 | Setup (Major Key) | 8 |
| Am7 -> D7 | Setup (Major Key) | 5 |
| D7 -> Gm7 | Resolution (Minor) | 4 |
| Bm7 -> E7 | Setup (Major Key) | 2 |
| E7 -> Am7 | Resolution (Minor) | 2 |
| C7 -> Fmaj7 | Resolution (Major) | 1 |
| Em7b5 -> A7 | Setup (Minor Key) | 1 |
| A7 -> Dm7 | Resolution (Minor) | 1 |
| Dm7 -> G7 | Setup (Major Key) | 1 |
🎼 Sheet Music
Find Lead Sheet on Sheet Music Direct (PDF)Harmonic Highlights
- Frequent ii-V-I movements targeting the relative major (F), often initiated by a secondary dominant (G7) resolving to the ii chord (Gm7).
- Sequential ii-V chains, specifically the Bm7–E7 to Am7–D7 progression, which utilize chromatic descent to transition between tonal centers.
- The use of the bVI7 chord (Eb7) acting as a predominant substitute or tritone-adjacent chord leading into the dominant D7.
- A sophisticated interplay between G minor and F major tonalities, characteristic of Gershwin’s “sweet and sour” harmonic language.
Improvisation Focus F Major and G Dorian scales, with heavy emphasis on guide tones (3rds and 7ths) to navigate the rapid ii-V transitions.
Difficulty Rating 3/5: The moderate tempo is accessible, but the constant cycling through secondary dominants and brief modulations requires disciplined harmonic navigation.