Avril Lavigne just released a brand new song after five years. On the track, called "Head Above Water," the singer recounts her battle with Lyme disease. The ballad includes a mix of piano, strings, synths and drums. Lavigne sings, “God keep my head above water/ I lose my breath at the bottom/ Come rescue me, I’ll be waiting/ I’m too young to fall asleep.” Rolling Stone reports Lavigne revealed that the song is about one night in which she thought she was dying.