I am in a Celtic ensemble that plays mostly traditional (no known composer) Irish and Scottish jigs and reels, as well as some traditional ballads. However, we will be performing at an upcoming Scottish Highland games festival, and would like to play a cover of "The Last Goodbye," Billie Boyd's song from the end credits of the last "Hobbit" movie. We will be paid for the gig, but it will not be recorded or broadcast.
My question: do we need to worry about some sort of copyright infringement regarding this song?
Thank you for your replies.