The Beer Barrel Polka, or Roll Out the Barrel, is a popular song from World War II, composed by Jaromír Vejvoda in 1927.
The song is also known as 'Rosamunde' in Germany, or 'Škoda Lásky' in the original Czech. Here it is, played by a German band:
H. L. Mencken (1880-1956) was an American writer known for his satirical criticism of American modern life and culture. Known as a 'man of ideas', he was friends with other influential figures such as Theodore Dreiser, F. Scott Fitzgerald, Sinclair Lewis and Alfred Knopf.