Theater magic, starting with “Tootsie” composer David Yazbek and musical theater obsessive John McWhorter on the art and wonder of tongue-twisting patter songs. Kurt Andersen talks with performance artist Taylor Mac on writing the new Broadway play, “Gary: A Sequel to Titus Andronicus.” And the odd mixture of religious fervor, class concerns and gender politics that made performing Shakespeare outdoors so popular in the United States.