As long-time parterrians may recall, that gala Tosca was to star Kristine Opolais, Jonas Kaufmann and Bryn Terfel, none of whom in the event showed up. Well, now the tantalizing trio have reassembled, or I suppose I should say assembled for the first time, for a semi-staging of the Puccini warhorse at the Graz Schloßbergbühne Kasematten on August 22.