According to the NY Times, the Metropolitan Opera decided to restage Richard Wagner's Tristan und Isolde to bring leading "acclaimed Wagnerian" tenor Ben Heppner and soprano Deborah Voigt together for the first time in a staged production. And for those of you who haven't been able to buy tickets, you can see them in tonight's final performance because it will stream live from the Met's website. (Here's a link that will launch the Met's RealPlayer......