Next to the national anthem, the song most associated with the game of baseball is "Take Me Out to the Ball Game," an early-20th-century song usually played during the seventh-inning stretch. Ironically, it was written by two men who had never attended a baseball game.
Jack Norworth wrote the words in 1908, after seeing a sign that said, "Baseball Today -- Polo Grounds." Albert Von Tilzer added the music. The song gained popularity in vaudeville acts, and now it's played at nearly every baseball game in the country.