Now, after the glee club learns that Finn has passed away, Mercedes will sing this same song in honor of Finn. Watch the full thing again, but be warned: This song is very emotional. Amber told TV host Ellen Degeneres that she broke down and cried while filming it. “Singing the song to him, the specific song that I’m singing, it’s very touching. And people are going to recognize this song,” she said at the time.