The Consortium Vocale Leipzig invites us to dinner: the members of the MDR Radio Chorus offer up a menu of delectable “Variations on the Trout”- quite naturally, Schubert’s Trout! And what’s more, two are world premiere recordings, by Franz Schoggl and Wolfram Langner. This is nouvelle cuisine, from revived Renaissance fare to Mediterranean cooking, Bohemian trout with dumplings a la Dvorak, and a recipe from molecular cuisine, Forella moderna. Head chef Michael Glaser, former director of the Bavarian Radio Symphony Chorus, has masterfully balanced all the flavors, serving up a world-class vocal menu.