There are umpteen operas based more or less closely on the legends surrounding Medea, Jason, the Golden Fleece and the events afterwards in Corinth. Marc-Antoine Charpentier’s 1693 version to a libretto by Corneille deals with the events in Corinth subsequent to Jason and Medea’s return with the fleece. The plot, in essentials, is simplicity itself. Jason is scheming to secure his future, and that of his children, by ditching Médée and marrying the king’s daughter Créuse. Médée is not having this and wreaks revenge on just about everybody else in the piece. Somehow Charpentier and Corneille string this out over five acts and the obligatory prologue glorifying Louis XIV, wisely omitted by director Marshall Pynkowski.