So this isn't on the official soundtrack but it's an awesome version of this song. It was performed and recorded specifically for the show by some CW execs.
Fan video by adelicateflower08. Music by Trevor Jones and Randy Edelman. One of the first movie soundtracks I ever bought and it still never fails to stir me.
I realize this is a tv score not movie, but I think it's absolutely gorgeous. Music by Christophe Beck- he did some amazing work on BtVS, but this is his best IMO. It perfectly captures the epic, eerie, otherworldly nature of that episode.
Video by poildepubix. Music by Clint Mansell. This movie is like a dream of a poem about death. Once again, Clint's music is the perfect support for Aronofsky's vision.