"Tam Lin" is a traditional Scottish ballad that tells the story of a young woman named Janet who falls in love with a man named Tam Lin. He is revealed to be a captive of the Fairy Queen, who demands a sacrifice from him. To save Tam Lin, Janet must confront the fairies and demonstrate her love and bravery. The ballad explores themes of love, sacrifice, and the supernatural. It highlights the tension between the human world and the fairy realm, as well as the power of true love to overcome obstacles. "Tam Lin" has inspired various adaptations in literature and music.