The #MeToo movement has ended the U.S. career of legendary 78-year-old Spanish tenor Placido Domingo, one of classical music’s greatest ambassadors and impresarios. For nearly half a century, Domingo’s intense stage presence and warm, soaring voice captivated opera audiences; during the 1990s, he reached millions of new listeners as a member of the itinerant Three Tenors. In recent years, long after most singers have retired from the stage, he has continued a grueling international performance schedule, now singing baritone roles with remarkable pitch control and legato. Domingo’s entrepreneurial drive has been as untiring as his stage career. He was pivotal...