Manhattan's Copacabana is a Scotch and watering place for Broadway's well-heeled show folk, who come regularly to pay homage to such distinguished comics as Jimmy Durante and Joe E. Lewis. Last week many of the regulars appeared as usual, but among them were scattered plenty of newcomers: moviegoers of the '30s who had turned up because the name in the newspaper ads read ''Nelson Eddy." He had been away a long time; they wanted to make sure he was the same old Nelson.
They soon found out. Onstage, in a brisk walk, came 52-year-old Baritone Eddy, his blond-tinted grey hair brushed...