"Demon Lover," a traditional folk ballad done by Steeleye Span in the 1970s.
It's a story about a woman who leaves her husband and child because a man promises to take on a trip. He takes her away alright. I won't spoil the ending, but let's just say it's not to the place she thought she was going.
We should do a thread on these old folk ballads and their connections to biblical stories. I never took them seriously until I got old enough to experience what they foretold. By then it was too late, of course.