"Forgotten" Opera

In order to show that the phenomenon of "repressed memory" (or dissociative amnesia) is a figment of the modern imagination, as it were, a researcher at McLean Hospital offered a prize "to the first person to identify a case of dissociative amnesia in any work of fiction or nonfiction prior to 1800." The winner? A French opera from 1786, Nina, by Nicholas Dalayrac. This from a report in Harvard magazine. (via Arts & Letters Daily)