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"?
Related documents: [0]  [DOC] Kurt Julian Weill (March 2, 1900April 3, 1950) was a German composer, active from the 1920s in his native country, and in his later years in the United States. He was a leading composer for the stage who was best known for his fruitful collaborations with Bertolt Brecht. With Brecht, he developed productions such as his best-known work "The Threepenny Opera", which included the ballad "Mack the Knife". Weill held the ideal of writing music that served a socially useful purpose. He also wrote several works for the concert hall. He became a United States citizen on August 27, 1943. [END] 
[1]  [DOC] 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. Although Hauptmann produced 80 to 90 percent of the text, Brecht suppressed this and assumed sole credit, and is usually listed as sole author in printed versions. [END] 
Answer: 
Elisabeth Hauptmann
Elisabeth Hauptmann