Music: Milanov of the Met

The New York Herald Tribune's caustic composer-critic Virgil Thomson went all out last week. He had just heard, he wrote, a voice "with a beauty that is unmatched among the sopranos of this country." The accolade went not to one of the seven singers making their debuts this season, but to bosomy Yugoslav Zinka Milanov, singing Donna Anna in Mozart's Don Giovanni for about the 20th time. Just five days earlier, another Trib critic had panned her. Wrote he: "[Her] decrease in avoirdupois [has] brought with it a disturbing lessening of her powers....