 I would say that's the Washington Post march. Sousa wrote that for the newspaper, the Washington Post. He received a small amount of money for it at the time, but the publishers managed to rake in a small fortune from the royalties from the publications of that piece. But in 1896, Bean says Sousa composed the piece that has Independence Day written all over it, the stars and stripes forever. Today, that song is the official march of the United States.