Chord Distribution Analysis
| Chord Symbol | Count | Frequency |
|---|---|---|
| Bbmaj7 | 9 | 17.0% |
| Ebm/maj7 | 8 | 15.1% |
| F7 | 4 | 7.5% |
| G7#9 | 2 | 3.8% |
| Cm7 | 2 | 3.8% |
| Em7b5 | 2 | 3.8% |
| A7#9 | 2 | 3.8% |
| Ebmaj7#11 | 2 | 3.8% |
Key Patterns Detected
| Pattern | Function | Frequency |
|---|---|---|
| Cm7 -> F7 | Setup (Major Key) | 2 |
| Dm7 -> G7 | Setup (Major Key) | 1 |
| G7 -> Cm7 | Resolution (Minor) | 1 |
| Dm7b5 -> G7#9 | Setup (Minor Key) | 1 |
| G7#9 -> Cm7 | Resolution (Minor) | 1 |
| Em7b5 -> A7#9 | Setup (Minor Key) | 1 |
| A7#9 -> Dmaj7 | Resolution (Major) | 1 |
| B7#9 -> Em7 | Resolution (Minor) | 1 |
| D7#9 -> Gmaj7 | Resolution (Major) | 1 |
| Cm7b5 -> F7 | Setup (Minor Key) | 1 |
| F7 -> Bbmaj7 | Resolution (Major) | 1 |
Harmonic Highlights:
- The prominent use of Ebm/maj7 against Bbmaj7 creates a rich modal interchange, functioning as bIVmaj7 from the parallel minor and establishing a distinctive “new picture” sound.
- A sophisticated descending dominant progression features G7#9 (VI7alt), followed by Gb7 (a tritone substitution for C7 or bII7 of F7), leading chromatically to F7 (V7).
- The Eb07 functions as a chromatic passing diminished chord, approaching Dm7 (iii minor) before resolving into a standard ii-V-I (Cm7-F7) in Bb major.
Improvisation Focus: Modal interchange to navigate non-diatonic major seven chords.
Difficulty Rating: 5 (Advanced). The frequent and rapid non-diatonic harmonic shifts, including modal interchange and chromatic dominant alterations, demand sophisticated harmonic understanding and rapid adaptation.