Norse, agreed, the LOST soundtrack was amazing and after watching the whole series, I pretty much had a Pavlovian response to cry upon hearing that music.
What I would call a "beautiful" song ranges far and wide, so here's a few different ones for your earholes:
Devin Townsend, Terminal -
and Infinite Ocean (sudden start/ stop kind of ruins the vibe on this one, as the whole album pretty much flows track to track, but anyway...)
and then somehow the same guy manages to come out with this, equally as beautiful, Juular -
In This Moment, The Promise. Gets me every time -
and finally, yes I consider this beautiful too. Fleshgod Apocalypse, The Violation -