Pomone, pastoral opera in a prologue and five acts, Robert Cambert / libretto Pierre Perrin, first performed Paris, Academie d Opera (Jeu de Paume de la Bouteille), 3 March 1671 -- "effectively the first French opera". Score only partially survives. Source: https://en.wikipedia.org/wiki/Pomone_(opera) ; the surviving music is recorded on Accord 476 2437 (Hugo Reyne, La Simphonie du Marais), MusicBrainz release b68fe1d2-fe23-4678-98d1-c69e48c5165c.