Donna Diana

Don Cesar, Prince of Urgel, is resting in Diego's Hall after having won the first prize in a tournament. He muses sadly on Donna Diana's coldness, which all his victories fail to overcome. Perrin the clown takes pity on him, and gives him the advice to return coldness for coldness. Don Cesar promises to try this, though it seems hard to hide his deep love. Floretta, Donna Diana's foster-sister enters to announce the result of the tournament. She flirts with Perrin, to whom she is attached, but he turns a cold shoulder to her and she departs in a rage, though he is head over heels in love with her.

The next scene opens on a brilliant crowd, welcoming Count Sovereign of Barcelona and his daughter Donna Diana. The Count greets them graciously, and making sign to the three gallant Princes, Don Cesar of Urgel, Don Louis of Bearne and Gaston Count de Foix, they advance to receive their laurels on bended knee from the Princess, who crowns Cesar with a golden wreath, while the two other princes each win a silver prize. When the ceremony is over, Don Diego turns to his daughter, asking her to choose a husband and give an heir to the country, but Diana declares that love seems like poison to her, and marriage death. Gaston and Louis, nothing daunted, determine to try their luck, and while the father prays to God to soften his daughter's heart, Cesar's courage sinks ever lower. Donna Diana alone is cool and calm, inwardly resolved to keep her hand and heart free. She is envied by her two cousins Fenisa and Laura, who would gladly choose one of the gallant warriors. Perrin now advises the Princes to try their wit and gallantry on the Princess. Gaston begins to plead his cause, declaring, that he will not leave Barcelona without a bride and Louis follows his example; both are greatly admired and applauded by the assistants, but Diana finds their compliments ridiculous and their wit shallow. Cesar without a word retires to the background, and when asked by the Princess why he does not compete with his rivals, answers "Because I will not love, nor ever wish to be loved; I only woo you, to show you my regard." Greatly mortified, Diana resolves to punish his pride.

A ball is going on in the Prince's gardens. Each of the ladies has a bunch of different coloured ribbons, and decides to get the man she loves for her own. Diana explains that each knight is to choose a colour, which entitles him to own the lady wearing that colour, as long as the masquerade lasts. Don Louis choosing green gets Donna Laura, Don Gaston wearing red is chosen by Fenisa; Perrin loudly asserting that, abhorring love he chooses the obscure colour black, wins Floretta, and Don Cesar choosing white, finds himself Donna Diana's champion. She takes his arm, and her beauty so arouses him, that forgetting himself, he confesses his love. Triumphant but mocking, she turns from him. In a bantering tone he asks her, if she really believed, that his entreaties were real?

Furious at being so easily duped she bids him leave her, and when alone resolves to have revenge. She calls Perrin to fetch her cousins, and charges him to let Cesar know that he can hear her sing in the gardens. Adorned with beautiful garments and surrounded by her attendants, she plays and sings sweetly as soon as she hears Don Cesar's steps. But he wanders in the grounds, admiring the plants, to all appearance deaf to beauty and song. Impatiently Diana signals to Floretta to let Cesar know, that he is in the presence of his Princess, at which, as awaking from a dream, Cesar bows to the Princess and excuses himself, leaving Diana in despair.

Perrin gives vent to his feelings of love for Floretta, and about the Princess, whose state of mind he guesses. He is delighted to see his scheme successful, and sings a merry air, overheard by Diana. Offstage Don Louis is heard, serenading Donna Laura, while Don Gaston sings Fenisa's praise, so that poor Diana is surrounded by loving couples, who shamelessly carry on their courting before her very eyes, and then retire casting mischievous glances at their disgusted mistress.

Diana sees Cesar approaching and determines to try again to in order to humble his pride. She explains that she has resolved to yield to her father, and give her hand to Prince Louis. For a moment Cesar stands petrified, but Perrin whispers not to believe in women's wiles. So he controls himself once more, congratulates her, wishing the same courtesy from the Princess, because, as he calmly adds, he has become betrothed to Donna Laura.

That is the last straw for Diana. Her reserve vanishes when her secret love for the hero, which she has not even admitted to herself, is in danger. She breaks down, and is found by her father, who enters, loudly acknowledging Don Louis as his son-in-law, and sanctioning Don Cesar's choice of Donna Laura. But Cesar begs to receive his bride from Diana's own hands, at which the latter rising slowly, asks her father, if he is still willing to leave to her alone the selection of a husband. Don Diego granting this, she answers: "Then I choose him who conquered pride through pride." "And who may this happy mortal be?" says Cesar. "You ask? It's you, my tyrant," she replies, and sinks into her lover’s arms.