It s Galuppi's Il Mondo alla Roversa . Women in Command. The text was written by the great librettist Carlo Goldoni, and the whole thing may have been, in part, a reaction to the power of Catherine and Maria Theresa. As the story begins, in a mythical island state, the women are in charge of everything. By the end of the opera, things have turned around.
Men are back in control, and it's the women who vow obedience.
All agree that the world has been put back in its proper order. Maybe that's all it is. But there might also be a bit of satire going on. When the opera starts, the women are behaving badly. So, the opera may be more enlightened than it appears.