'Jeanne d'Arc' (Maid of Orleans) is an opera in 4 acts by Pyotr Ilyich Tschaikovsky. It was composed to a Russian libretto by the composer, based on several sources: Friedrich Schiller's The Maid of Orleans, Jules Barbier's Jeanne d'Arc. The aria 'Da, cas nastal' is sung in the second act of the opera: In 'Château de Chinon' the king is being entertained forgetting his duty with his beloved Agnès Sorel. The archbishop suddenly appears, courtiers and people tell the king about the rout of the British, the French victory, the "glorious Maiden" who inspired the soldiers. Joan tells the astonished audience about the vision she had telling her to lead the fight. A vow of virginity was a condition of that victory. On the orders of king, Joan is put in commands of the army. This aria is also often performed in the French language under the title 'Adieu, forêts'.