I'm sitting in my office listening to some straight-ahead swinging Ellington on headphones, watching a young African dood kicking a soccer ball around outside the Muslim prayer room. He's jogging back and forth at about 140 bpm and I really want to be out there with him, running about and having fun, rather than stuck in here waiting for students to come avail themselves of my office hour.
Off behind him there are a couple of fatties smoking and chatting. They should be kicking that soccer ball too.
Watching this guy jogging about on the concrete in time to Joog Joog (currently favourite song - 1949 from the chronological classics Duke Ellington 1949-1950) reminds me of how lindy hop - jazz dances - are all about that relaxed, ground-eating, bouncy jogging motion. It's about bending your knees, sinking into the floor and pushing up again. It's about loose limbs, being strong in your core, getting into the ground...
And it doesn't work to groover swing (Jersey Bounce, Ella, 1961 Clap Hands, Here Comes Charlie)) - it encourages the wrong sort of bounce.