“Teresa Stich-Randall, 79, a U.S.-born operatic soprano once praised by Arturo Toscanini as ‘the find of the century,’ died July 17 in Vienna, Austria, where she had spent most of her professional career… Acclaimed for her interpretations of Mozart’s greatest works, Ms. Stich-Randall traveled between the United States and Europe, singing in the world’s greatest opera houses.”