OTAS, you found it

. . . to Birgit Nilsson, the great Wagnerian soprano that reigned supreme over a glorious 30-year career singing the most difficut roles. She will be missed.

I remember the first time I heard her --a tape at the 100th anniversary of the Metropolitan Opera (1987). By meerly walking on the stage, she brought the house down -- and at 70 sang Isolde to the envy of most young sopranos.