For one day only, Hackney's Round Chapel plays host to eight hours of live swing, jive and jazz from the best in the biz, including Down for the Count, Swing Commanders and DJ Pat da Kat. Now, there's no skivin' if you're jivin' but you can always hit the pause button to refuel; pop-up food stalls and the Crate Brewery will be on hand to keep you in the groove. No dress code, vintage clothing is optional.