the Libretto of  Amadis de Gaule was originaly set by an Italian-born French composer, instrumentalist, and dancer who spent most of his life working in whose court?
Jean-Baptiste Lully Jean-Baptiste Lully (] ; born Giovanni Battista Lulli ] ; 28 November 1632 – 22 March 1687) was an Italian-born French composer, instrumentalist, and dancer who spent most of his life working in the court of Louis XIV of France. He is considered a master of the French baroque style. Lully disavowed any Italian influence in French music of the period. He became a French subject in 1661.
Jacopo Corsi Jacopo Corsi (17 July 1561 – 29 December 1602) was an Italian composer of the late Renaissance and early Baroque and one of Florence's leading patrons of the arts, after only the Medicis. His best-known work is "Dafne" (1597/98), whose score he wrote in collaboration with Jacopo Peri. Six fragments of the score have survived, two by Corsi and four by Peri. The libretto, by Ottavio Rinuccini, has survived intact. Despite priority quibbles at the time, Dafne is generally accepted as the first opera.