 In 1765, Melchior Grimm published ""Poème lyrique"", an influential article for the Encyclopédie on lyric and opera librettos.Under the patronage of his former music pupil, Marie Antoinette, who had married the future French king Louis XVI in 1770, Gluck signed a contract for six stage works with the management of the Paris Opéra.He began with "Iphigénie en Aulide" (19 April 1774).