Grace Bumbry, a pioneering mezzo-soprano who became the first Black singer to perform at Germany’s Bayreuth Festival during a career of more than three decades on the world’s top stages, has died. She was 86. Bumbry died Sunday at Evangelisches Krankenhaus, a hospital in Vienna, according to her publicist, David Lee Brewer.
She had a stroke on Oct. 20 while on a flight from Vienna to New York to attend her induction into Opera America’s Opera Hall of Fame. She was stricken with the plane 15 minutes from landing, was treated at NYC Health + Hospitals/Queens and returned to Vienna on Dec. 8. She had been in and…