The Irish Rovers: The Unicorn
The Irish Rovers were a Canadian band whose members were all born in Northern Ireland. Their highest charting song in the U.S. was this tune, which isn't about Ireland or immigrants, but is associated with the theme because of the band. The words to the tune are based on a poem by Shel Silverstein, which is in a slightly different form in Where the Sidewalk Ends." Silverstein isn't Irish either, but he was successful writing songs for other people.
Guest post by Paul T