In this final act of I Puritani (The Puritans), which is set during the English Civil War, the royalist hero Arturo is set to be executed by soldiers while his temporarily insane lover Elvira looks on. But a messenger arrives from Oliver Cromwell bearing good news.
Listen to the opera here. This is an all-star recording with Joan Sutherland, Luciano Pavarotti, Pierro Cappuccilli, and Nicolai Ghiaurov.
Read more about the opera here.