GREAT PERFORMANCES AT THE MET opens its fourth PBS broadcast season with a new production of Puccini's Tosca, staged by Luc Bondy in his Met debut, and starring Karita Mattila in her first Met performance of the title role. The cast includes Joseph Colaneri, Marcelo Álvarez, George Gagnidze and Paul Plishka. James Levine conducts. Sets are by Richard Peduzzi, with costumes by Milena Canonero and lighting by Max Keller.