the sadest song, does it have to be rap, because if not then it's that tune they played on ff7 when i lost aerith, after i had all four of her limit breaks AHHHHHHHHHHH!!!!!, I straight cried!!!

then you said wrote, so written, i guess i don't kno, that's a good question but when you say sad, i automatically think about nas, one of those songs he wrote had to be sad