Chord Distribution Analysis
| Chord Symbol | Count | Frequency |
|---|---|---|
| Bbm7 | 6 | 18.8% |
| Abmaj7 | 5 | 15.6% |
| Eb7 | 5 | 15.6% |
| Bb7 | 3 | 9.4% |
| Cm7 | 2 | 6.2% |
| Fm7 | 2 | 6.2% |
| Ebmaj7 | 1 | 3.1% |
| C7b13 | 1 | 3.1% |
Key Patterns Detected
| Pattern | Function | Frequency |
|---|---|---|
| Bbm7 -> Eb7 | Setup (Major Key) | 5 |
| Eb7 -> Bbm7 | Resolution (Minor) | 3 |
| Fm7 -> Bb7 | Setup (Major Key) | 2 |
| Eb7 -> Abmaj7 | Resolution (Major) | 2 |
| C7b13 -> Fm7 | Resolution (Minor) | 1 |
| Gm7/Bb -> C7b9 | Setup (Major Key) | 1 |
🎼 Sheet Music
Find Lead Sheet on Sheet Music Direct (PDF)Harmonic Highlights
- The progression utilizes a sophisticated chromatic descent (Cm7 - B7 - Bbm7 - A7#11 - Abmaj7) where B7 and A7#11 act as tritone substitutions (subV/V and subV/IV) to smooth the transition to the IV chord.
- Frequent secondary dominants, such as C7b13 (V/ii) and C7b9, create localized tension and strong resolutions to the Fm7 and Bbm7 chords respectively.
- The structure relies on constant ii-V-I motion in Eb major, often extended by secondary ii-V clusters (Bbm7 - Eb7) that briefly tonicize Ab major.
Improvisation Focus The Eb Major Bebop scale, combined with chord-tone targeting to navigate the rapid chromatic dominant substitutions.
Difficulty Rating 3/5: While the home key is stable, the soloist must navigate fast-moving tritone substitutions and frequent secondary dominant resolutions without losing the melodic swing.
📚 Standard Available in:
The Real Book - Volume III
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