Chord Distribution Analysis
| Chord Symbol | Count | Frequency |
|---|---|---|
| Bbmaj7 | 9 | 27.3% |
| G7 | 5 | 15.2% |
| Cm7 | 5 | 15.2% |
| Ab7#11 | 4 | 12.1% |
| Ebm6 | 2 | 6.1% |
| C7 | 2 | 6.1% |
| F7 | 2 | 6.1% |
| F7#5 | 1 | 3.0% |
Key Patterns Detected
| Pattern | Function | Frequency |
|---|---|---|
| G7 -> Cm7 | Resolution (Minor) | 2 |
| Cm7 -> F7 | Setup (Major Key) | 2 |
| Cm7 -> F7#5 | Setup (Major Key) | 1 |
| F7#5 -> Bbmaj7 | Resolution (Major) | 1 |
🎼 Sheet Music
Find Lead Sheet on Sheet Music Direct (PDF)Harmonic Highlights
- The bVII7 (Ab7#11) serves as a “backdoor” dominant, utilizing Lydian Dominant colors to provide a non-functional resolution back to the tonic Bbmaj7.
- Inclusion of the minor subdominant (Ebm6) creates a nostalgic iv-I cadence, providing a chromatic transition from the ii-V-I framework.
- The progression utilizes a secondary dominant chain (G7 to C7), functioning as V/ii and V/V to intensify the pull toward the final F7 turnaround.
- Frequent use of altered tensions (F7#5) increases the harmonic pressure, facilitating a more dramatic resolution to the Bb major root.
Improvisation Focus Targeting the #11 (D natural) over the Ab7 chord to emphasize the backdoor resolution while maintaining the Bb major tonal center.
Difficulty Rating 3/5: The tune follows a standard major key structure but requires specific awareness of modal interchange and non-diatonic “backdoor” substitutions.
📚 Standard Available in:
The Real Book - Volume III
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