In what year did the writer of the music of the Firebrand of Florence become a United States citizen?
Kurt Weill 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.
Rudolf Friml Charles Rudolf Friml (December 7, 1879 – November 12, 1972) was a Czech-born composer of operettas, musicals, songs and piano pieces, as well as a pianist. After musical training and a brief performing career in his native Prague, Friml moved to the United States, where he became a composer. His best-known works are "Rose-Marie" and "The Vagabond King", each of which enjoyed success on Broadway and in London and were adapted for film.