Chord Distribution Analysis
| Chord Symbol | Count | Frequency |
|---|---|---|
| Bb7 | 19 | 44.2% |
| Db7 | 3 | 7.0% |
| Ab7 | 2 | 4.7% |
| Gb7 | 2 | 4.7% |
| F7 | 2 | 4.7% |
| Abm7 | 2 | 4.7% |
| Gbmaj7 | 2 | 4.7% |
| Abmaj7 | 2 | 4.7% |
Key Patterns Detected
| Pattern | Function | Frequency |
|---|---|---|
| Eb7 -> Abmaj7 | Resolution (Major) | 1 |
| Abm7 -> Db7 | Setup (Major Key) | 1 |
| Db7 -> Gbmaj7 | Resolution (Major) | 1 |
| F#m7b5 -> B7b9 | Setup (Minor Key) | 1 |
| Fm7b5 -> Bb7b9 | Setup (Minor Key) | 1 |
| Cm7b5 -> F7b9 | Setup (Minor Key) | 1 |
Harmonic Highlights:
- The piece features a prolonged opening Bb7 dominant chord, establishing significant tension over an extended period before further harmonic movement.
- A sophisticated descending dominant cycle (Ab7-Db7-Gb7) efficiently guides the harmony towards Gb major, the relative major of Eb minor.
- A characteristic bebop ii-V-I progression in Gb major utilizes a tritone substitution for the V7 chord (D7b9 resolving to Gbmaj7).
- Chromaticism is introduced with advanced chords like B7#11, serving as a Lydian dominant or reharmonization before returning to the primary dominant.
Improvisation Focus: Altered dominant scales to navigate complex V7 tensions.
Difficulty Rating: 4 - Advanced. Frequent use of altered dominants, tritone substitutions, and non-diatonic chords requires advanced harmonic understanding and improvisational agility.