Eric Clapton - Tears in Heaven is about the death of his son, so that's a tearjerker. So is the Across the Universe version of (SPOILER)Let it Be because it starts off being sung by a little boy in the middle of a race riot (When I find myself in times of trouble, mother Mary comes to me, speaking words of wisdom, let it be, etc.) and after the first verse it's taken over by a gospel singer, and it cuts to the boy's funeral. In one of the two soundtrack versions (I think it's the version on the one-disc soundtrack, not the two-disc version) the ending is sung by the boy. Kind of a farewell. It's very well done. It's a bit oversung for a song you'd just listen to (unless you're into gospel music) but in the context of the movie, it's absolutely heartbreaking.