Question: Kurt Julian Weillwas a German composer, active from the 1920s in his native country, and in his later years in the United States, with Brecht, he developed productions such as his best-known work, the Threepenny Opera is a "play with music" by Bertolt Brecht and who, adapted from John Gay's 18th-century English ballad opera, "The Beggar's Opera"?
Sentence (from "Kurt Weill"): With Brecht, he developed productions such as his best-known work "The Threepenny Opera", which included the ballad "Mack the Knife".
Relevant evidence: Yes