Has anyone read "The Host" by Stephenie Meyer? It's a book about a extraterrestial species who are called "souls" who come to earth. Humans are the hosts for the "souls". It's a story about a particular soul who has to come to terms with the world that we have created. I'm not sure if this song inspired the book, or the book inspired the song but the overlap is incredible. The tune is a bit perky for the book, although there are parts of the book where I can envisage the song being played.