Director Barrie Kosky / Photo: Jan Windszus “He’s the gayest straight composer ever, you know what I mean?” Barrie Kosky is speaking to me after his first week of rehearsal for a new production of Richard Strauss’ Die Frau ohne Schatten. “The music’s so queer, it’s outrageous.” Kosky is in Aix-en-Provence, where his new production opens tomorrow. Frau is his fourth Strauss opera, after productions of Schweigsame Frau, Salome, and Rosenkavalier in Munich and Frankfurt.