THE good citizens of quiet Lakeville, Conn, go to bed earlywith one exception. But even the rare, late-homecoming villager is no longer surprised at the single globe of light shining from the ungainly green-and-yellow hilltop house which broods over the main street. He knows, along with those of his neighbors who have seen it, homeward bound from a church supper or Saturday-night movie, that Mme. Wanda Landowska is at her devotions: her altar, the harpsichord.
Pint-sized (4 ft. 8 in.) Mme. Landowska, 73, is unchallenged high priestess of the plunky, double-keyboard instrument for which...