Author Emily Mann’s Having Our Say: The Delany Sisters’ First 100 Years is a two-character series of reminiscences taking place entirely in one home, and in close to real time. Consequently, you might not expect the Timber Lake Playhouse’s latest to boast much in the way of technical showmanship. But the visual effect that occurs 30 minutes into director Chuck Smith’s irrepressibly jubilant production is a true stunner, and would no doubt stand as the show’s most magical element if the play were presented wholly free of actors.