La grotta di Trofonio, angs 111

Dori and Ofelia (sisters) are in love with Plistene and Artemidoro (friends). The two pairs have contrasting personalities: Dori and Plistene are extroverted and enthusiastic, Ofelia and Artemidoro are introverted and reserved. The magician Trofonio invites them to his magic cave where their characters are reversed, first the men and then the women. Eventually everything is sorted out and there is a happy ending.