Hail, Columbia is an American patriotic song which plays on Enclave Radio.
Hail Columbia was originally played at General George Washington's inauguration (under the title "The President's March") and remained the United States' unofficial national anthem until "The Star-Spangled Banner" was named the official anthem in 1931.
Though the soundtrack bears the same title, it is in fact different from the actual piece by Philip Phile, and appears to be an original composition.
Hail, Columbia, as an original soundtrack for the game 
The traditional Hail, Columbia