A dominant with a 9 on top stops barking and starts strutting. Funk discovered you don't even have to resolve it — park the whole band on one ⁹ chord and groove is the resolution.
movesthe 9 rides above the b7 — tension turns to swaggersolo·singMixolydian with attitude; land on the 9 and stay thereon recordJames Brown — the one-chord ⁹ vamp (Sex Machine's whole engine)try itVamp two bars of 5⁹ before your chorus lands. Sixteenth-note strums, small motion.