The Andrews Sisters were the most popular music trio of the 1930s and 1940s. Their public image became synonymous with World War II, due to the popularity of their songs during the war years and because of their tireless devotion to entertaining American troops. Patty, LaVerne, and Maxene Andrews began singing professionally in 1932. They perfected their own style—a strong, clean vocal delivery with lush harmonic blends—but also recorded scores of songs in a wide array of other styles. More popular tunes like "Bei Mir Bist Du Schöen," "Beer Barrel Polka," and "Boogie Woogie Bugle Boy of Company B" sold millions of records and made them national stars. Their songs were happy in tone, aimed at boosting the morale of the American public. The sisters appeared in a number of wartime movies, and earned a devoted audience in the millions of civilians and soldiers who heard their songs.

Further Reading:

Andrews, Maxene, and Bill Gilbert. Over Here, Over There: The Andrews Sisters and the USO Stars in World War II. New York, Zebra Books, 1993.