Classical-Music Venues, Hiding in Plain Sight
Classical-music presenters are placing big bets on new venues, such as Williamsburg's dynamic National Sawdust. But some of the most evocative spaces may be hiding in plain sight"take the Church of the Intercession, a grand Episcopalian pile way uptown on Broadway at 155th St. "The Crypt Sessions" (which has hosted the violinist Amy Schroeder, of the Attacca Quartet, above) is drawing capacity audiences; on April 5, …