Soprano Carmen Balthrop, best known for her role in Joplin Opera, has died at the age of 73.

Soprano Carmen Balthrop made her Metropolitan Opera debut on April 6, 1977. Thirteen days later, he made an entirely different kind of debut in a courtroom of the United States Senate. Miss Balthrop was one of many people that day, just at the beginning of a career that would take her to opera and concert …