It’s summer and the time is right for dancing in the streets. The town of Clifton will let you do exactly that FOR FREE starting Friday with Swingman and the Misfit Mutts. June 13 means The Retrocasters with sounds from the ‘50s, ‘60s and ‘70s. On June 20, The Jersey Swamp Cats will enliven the proceedings with the kind of jump blues that will make you want to twist and shout.