It is a song. "Magic" from Xanadu. This song has haunted me since I first actually listened to the lyrics. Olivia Newton John is the performer.
I have never seen the movie. It is a musical and it was considered a flop. Yet Xanadu does in fact exist. The town is in China and was a secondary center of the Mongols after Ghengis Khan conquered China. In some spiritual philosophies Xanadu is said to be the home of The Great White Brotherhood, which is said to watch over humanity and direct our path.
I have always believed the lyrics to this song to be concerned with our guardian angels, the higher self etc. Whatever application the song had to the movie, the import of the message transcends it.