Songs about suicide
The genre played by Nirvana (and Linkin Park, above) is prolific for songs with similar topics. Here the suicide topic is a bit subtle. Nevertheless, the song is the last one ever recorded by Nirvana before Kurt's suicide and reflects his pain (to which he surrenders), not only through the lyrics, but also through his singing.
Suggested by SaintMark.
The topic of suicide here is slightly different. I don't want to include songs about someone else's suicide in this collection, however, this is a poetic prayer about suicidal people. Not only about them: the song is full of hope for a world in which people wouldn't feel like committing suicide anymore and for this reason, I feel like it deserves a place here.
Suggested by Hampsicora.