Imagine a question and stream-of-consciousness explanation for which this is the answer: a spirit staying with you after its death and haunting you until you actually wish that the spirit were gone because it wo n't leave you alone
Question: "My Immortal" is a piano power ballad with a slow tempo. Lyrically, it talks about "a spirit staying with you after its death and haunting you until you actually wish that the spirit were gone because it wo n't leave you alone." Critical reception towards the song was positive, with critics complimenting its piano melody. In 2005 it received a nomination for Best Pop Performance by a Duo or Group with Vocals at the 47th Grammy Awards. The song was also commercially successful, peaking within the top ten in more than ten countries. It also peaked at number seven on the Billboard Hot 100 and topped the charts in Canada, Greece and the US Adult Pop Songs chart. The single was certified gold in the United States, and platinum in Australia.

What does the song immortal by evanescence mean?
Stream-of-consciousness: The relevant sentence in the passage is: Lyrically, it talks about "a spirit staying with you after its death and haunting you until you actually wish that the spirit were gone because it wo n't leave you alone."