THINGS ARE O.K. WITH MR. K For decades, three words""by Barry Kleinbort""have often appeared in cabaret and theatre credits, typically preceded by "directed" or "written." At Birdland, The Kleinbort Collection"a gratifying gathering of his material from past projects"put the bespectacled, merry, mustached man himself on stage to introduce guest singers and share the origins of […] The post Cabaret Review: THE KLEIN…