Kurt Weill was known for producing the opera adapted from which 18th century English opera?
Kurt Weill:  With Brecht, he developed productions such as his best-known work "The Threepenny Opera", which included the ballad "Mack the Knife". The Threepenny Opera: The Threepenny Opera (Die Dreigroschenoper ) is a "play with music" by Bertolt Brecht and Elisabeth Hauptmann, adapted from John Gay's 18th-century English ballad opera, "The Beggar's Opera", with music by Kurt Weill and insertion ballads by François Villon and Rudyard Kipling.
The Beggar's Opera