To accurately answer your question, I'll need to identify the individuals you're referring to. Could you please provide the list of individuals you have in mind? This will help me give a precise and detailed response regarding their contributions to opera.
How is August 15 celebrated differently among Catholics, Anglicans, and Lutherans?
How does Miami University rank among public national universities?
WHO IS JOSE RIZAL?
How do new patient-reported measures relate to colorectal cancer screening among Latino patients?
How did the orientation and roof design differ among the various synagogues described?