Peter Herman Adler, music director and conductor of the Baltimore Symphony Orchestra between 1959 and 1968, died in his sleep early Tuesday in the home of friends in Ridgefield, Conn. He was 91.
As artistic director of the NBC Opera Company in New York from 1949 to 1959, he pioneered the broadcasting of opera on television.
After his tenure at the BSO, he returned to New York, where he was artistic director of National Education Television, predecessor of PBS. He made his Metropolitan Opera debut in 1972.