About 130 children took part in a sleepover at Rome’s opera house, part of a campaign to make up for a lack of music education by making the theater and the art form more familiar and accessible.

One of the only known pre-Holocaust Yiddish operas performed in Europe had a rather shabby debut. When it premiered May 24, 1924, at Warsaw’s Kaminsky Theatre, its composer, Henech Kon, had to ...