Because he farted the tune and just put some random words in there :P
Mila Rodina
Me
Lyrics written by Irving Burgie and composed by C. Van Roland Edwards
Henry
the war of 1812
The music was composed by Philippe Gentil and the lyrics were written by Jean Georges Prosper.
Fort McHenry. Someone created a poem about it which later became the National Anthem. http://en.wikipedia.org/wiki/Fort_McHenry
American Revolution
Fort McHenry.
cause idgaf
The national anthem of Bangladesh was written by Rabindranath Tagor in 1906. Though this song is the expresses the reunification of two bengals; it was adopted as a national anthem of Bangladesh in 1972. Despite the fact that the music of this song is not an original one, inspired/taken from the song "kothay pabo tare" a song by Gagan Harkara.
The original flag is currently housed at the Smithsonian Museum of American History.