Chord Distribution Analysis
| Chord Symbol | Count | Frequency |
|---|---|---|
| Bbmaj7 | 9 | 26.5% |
| C7 | 6 | 17.6% |
| F7 | 5 | 14.7% |
| Cm7 | 4 | 11.8% |
| Gm7 | 3 | 8.8% |
| G7 | 2 | 5.9% |
| Em7b5 | 1 | 2.9% |
| A7b9 | 1 | 2.9% |
Key Patterns Detected
| Pattern | Function | Frequency |
|---|---|---|
| F7 -> Bbmaj7 | Resolution (Major) | 5 |
| Cm7 -> F7 | Setup (Major Key) | 4 |
| G7 -> Cm7 | Resolution (Minor) | 2 |
| Gm7 -> C7 | Setup (Major Key) | 2 |
| Em7b5 -> A7b9 | Setup (Minor Key) | 1 |
| A7b9 -> Dm7 | Resolution (Minor) | 1 |
🎼 Sheet Music
Find Lead Sheet on Sheet Music Direct (PDF)Harmonic Highlights
- Employs a recurring I-VI-ii-V progression (Bbmaj7-G7-Cm7-F7), utilizing G7 as a secondary dominant (V/ii) to enhance harmonic pull toward the supertonic.
- Incorporates a II7 chord (C7) acting as a secondary dominant of the dominant (V/V), typical of the “swing era” harmonic vocabulary.
- Features a brief tonicization of the mediant (Dm) via a minor ii-V (Em7b5-A7b9), introducing a momentary shift in tonal color.
- Uses chromaticism through the Db7 chord, functioning as a tritone substitute (subV/ii) to create a smooth, descending bass line toward Cm7.
Improvisation Focus Guide-tone voice leading to highlight the resolution of secondary dominants.
Difficulty Rating 2/5; the progression relies on standard jazz turnarounds and stays primarily within the Bb major tonal center, making it accessible for intermediate improvisers.