"Are You Sure?", sung and written by Willie Nelson, is a song featured in "House of the Rising Sun" on Hurley's CD player. The version Hurley is listening to has only been released on Nelson's 2003 Crazy: The Demo Sessions compilation. The song lyric "Are you sure this is where you want to be?" is possibly intended to be symbolic: the survivors' decisions to move to the caves or stay on the beach. In a larger symbolic meaning, the lyric could refer to the fact that some survivors, like Locke, want to stay on The Island, and are, technically, sure of where they want to be. Others, like Kate, are unsure of whether they want to be on The Island, thus the repeating question: Are you sure this is where you want to be?
Oh, look around you
These are your friends
You seem in such a hurry to live this kind of life
Look around you, take a good look
Don't let my tears persuade you, I had hoped I wouldn't cry
Oh, look around you, take a good look
- Wikipedia - "Are You Sure?"