The title track "The Unicorn", a recording of Shel Silverstein's poem, featured Glen Campbell on lead guitar, and reached #2 in the US Adult Contemporary Charts, #7 in the U.S. Hot 100, and #5 in Ireland. Despite having virtually nothing to do with Ireland or Irish culture, the song remains popular in Irish pubs to this day.
"The Unicorn" song is also included on The Irish Rovers Gems double disk (1996), their 40th Anniversary CD, "40 Years A-Rovin'" (Rover Records, 2005), and their "Home In Ireland" CD and DVD. In 1968 the song was covered by Irish trio The Bachelors.