S _ _ _ _ _ U _ _
Misses: A, H, K, L, O
Well, Konstantine by Something Corporate was life-changing for me, but i wouldn't know about you. It's not even close to metal, so i don't know if you would like it. The story is beautiful, though, and if you're emo enough and a good piano harmony does it for you then you'll probably love this song.
Another life-changing (to a lesser degree) song is (to me, anyway) Wires by Athlete. Again, not metal (more like soft/slow rock, but it's not like every other rock band out there). Extremely depressive lyrics if you understand them the way i do.
I could send you both songs if you like.