"Alcyone" is an opera by the French composer Marin Marais. It takes the form of a tragédie en musique in a prologue and five acts. The libretto, by Antoine Houdar de la Motte, is based on the Greek myth of Ceyx and Alcyone as recounted by Ovid in his Metamorphoses. The opera was first performed on 18 February 1706 by the Académie royale de musique at the Théâtre du Palais-Royal in Paris. The score is particularly famous for the storm scene (tempête) in act 4. The "Marche pour les Matelots", from act 3, became popular as a dance tune and is the basis of the Christmas carol "Masters in This Hall".