Chord Distribution Analysis
| Chord Symbol | Count | Frequency |
|---|---|---|
| F7 | 12 | 37.5% |
| Eb7 | 12 | 37.5% |
| Bb7 | 4 | 12.5% |
| Ab7 | 3 | 9.4% |
| C7 | 1 | 3.1% |
No obvious ii-V patterns detected.
🎼 Sheet Music
Find Lead Sheet on Sheet Music Direct (PDF)Harmonic Highlights
- The progression utilizes parallel dominant 7th chords (F7 to Eb7 and Bb7 to Ab7) that move in whole-step descents, creating a non-functional, “constant structure” harmonic texture.
- In the key of Ab, these movements function as VI7–V7 and II7–I7 relationships, substituting traditional ii-V-I cadences for a soul-jazz influenced gospel vamp.
- The harmony relies on the Mixolydian color of each chord rather than diatonic resolution, emphasizing the flat-seventh interval to maintain a persistent bluesy tension.
Improvisation Focus Mixolydian modal shifting: Targeted switching between the Mixolydian scales of each chord (F, Eb, Bb, and Ab) to highlight the shifting non-diatonic tones.
Difficulty Rating 2/5: The repetitive, two-chord vamp structure is accessible for beginners, though navigating the constant dominant 7th shifts requires basic modal fluency.
📚 Standard Available in:
The Real Book - Volume IV
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