GENEVA (AP) — Famed for her beauty that matched her serene voice, Swiss-born diva Lisa Della Casa swept up crowds at opera houses of the past century with an elegant and radiant style that established her as one of the finest sopranos of her generation.

After more than 400 performances at the Vienna State Opera, where her interpretations of many great roles, particularly those from Wolfgang Amadeus Mozart and Richard Strauss, won her wide acclaim and appreciation, Della Casa left the opera world in 1974, apparently weary of the music business.

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