Chord Distribution Analysis
| Chord Symbol | Count | Frequency |
|---|---|---|
| Abmaj7 | 4 | 10.8% |
| Fm7 | 4 | 10.8% |
| Bb7 | 4 | 10.8% |
| Ebmaj7 | 2 | 5.4% |
| Eb7 | 2 | 5.4% |
| Ab07 | 2 | 5.4% |
| Ebmaj7/G | 2 | 5.4% |
| Gb07 | 2 | 5.4% |
Key Patterns Detected
| Pattern | Function | Frequency |
|---|---|---|
| Eb7 -> Abmaj7 | Resolution (Major) | 2 |
| Ab07 -> Ebmaj7/G | Resolution (Major) | 2 |
| Fm7 -> Bb7 | Setup (Major Key) | 2 |
| Am7b5 -> D7b9 | Setup (Minor Key) | 1 |
| C7 -> Fm7 | Resolution (Minor) | 1 |
| Bb7 -> Ebmaj7 | Resolution (Major) | 1 |
Harmonic Highlights:
- Frequent use of the I7 (Eb7) to IVmaj7 (Abmaj7) movement, functioning as a “backdoor dominant” to the subdominant, a signature Gershwin characteristic.
- Prominent deployment of diminished chords (Ab07, Gb07, E07) as dominant substitutes or passing chords, injecting tension and chromaticism.
- Temporary modulations or extended dominant harmony through ii-V-I sequences (e.g., Am7b5-D7b9-G7b13-C7), navigating different tonal centers.
- The minor iv chord (Abm6) creates a distinctive melancholic color before resolving to the tonic or tonic-like harmony (Eb6/G).
Improvisation Focus: Melodic Minor Scale.
Difficulty Rating: 4 (Advanced Intermediate). Requires navigating numerous diminished passing chords, altered dominant voicings, and brief modulations beyond basic diatonic harmony.