Chord Distribution Analysis
| Chord Symbol | Count | Frequency |
|---|---|---|
| Gbmaj7#11 | 5 | 27.8% |
| Bbm7 | 4 | 22.2% |
| Bbmaj7 | 2 | 11.1% |
| Gm7 | 2 | 11.1% |
| Am7b5 | 1 | 5.6% |
| D7#9 | 1 | 5.6% |
| Fm7 | 1 | 5.6% |
| Bb7 | 1 | 5.6% |
Key Patterns Detected
| Pattern | Function | Frequency |
|---|---|---|
| Am7b5 -> D7#9 | Setup (Minor Key) | 1 |
| D7#9 -> Gm7 | Resolution (Minor) | 1 |
| Fm7 -> Bb7 | Setup (Major Key) | 1 |
| F7#5 -> Bbm7 | Resolution (Minor) | 1 |
🎼 Sheet Music
Find Lead Sheet on Sheet Music Direct (PDF)Harmonic Highlights
- The progression features modal interchange, frequently pivoting between Bb Major (Bbmaj7) and Bb Minor (Bbm7) tonalities.
- The extensive use of Gbmaj7#11 serves as a prolonged bVI chord, establishing a Lydian subdominant color before the final V-i resolution.
- It employs a secondary ii-V (Am7b5 - D7#9) to target Gm7, introducing temporary tonal ambiguity through the use of the altered dominant.
- The transition from Bb7 to Gbmaj7 utilizes a “backdoor” approach, common in hard bop, to navigate toward the submediant.
Improvisation Focus
Bb Melodic Minor and the integration of the Bb Blues scale.
Difficulty Rating
3 (Intermediate): The frequent shifts between parallel major and minor modes require sophisticated voice leading and a strong grasp of altered dominant extensions.
📚 Standard Available in:
The Real Book - Volume V
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