Sad song

This may seem like a strange concept but I have always been interested in finding out what people's favorite sad songs are. These are not necessarily the songs that you listen to when you are sad. On the contrary it might be the song that you listen to when you are happy and can appreciate the song without it bringing you down.
Here were some of the answers I got:

  Cats in the cradle

 Wish you were here

Best ill ever be                                      

So followers..I know I have let you down. but feel free to leave your favorite sad song in a comment!