Stradella and Leonore, joined by the bandits, sing of the beauties of Italy. The happy couple join a group of pilgrims. Bassi arrives and discovers that his instructions have not been carried out, but, when he offers the bandits more money, they agree again to murder Stradella. Bassi joins them. As they advance to do the deed, Stradella rehearses, with the pilgrims, a hymn in praise of the Virgin Mary, whose festival is on the following day. Its message is that she will forgive evil-doers who turn to the paths of righteousness, and the three conspirators, still clutching their daggers, are overwhelmed with emotion and, kneeling, join in the hymn. Leonore enters, and Bassi confesses. She and Stradella forgive him and his henchmen, and the opera ends with Stradella's arrival on a hillside in front of a picture of the Madonna, where the pilgrims rejoice in the power of his music and of divine grace.
