I heard this while walking past my sister watching an episode of the show Supernatural the other night. It's a piece I've looked for before but never found and now it's bugging me again. TV shows are extremely bad at crediting instrumental music that they use in their episodes, so this time I was as unsuccessful at finding it as the last time.

I was told the episode was #10. Death's Door of Season 7. you can hear the song between 0.05 and 0.52 here -> http://www.youtube.com/watch?v=c6a2-Bk4PNU

It's been driving me crazy trying to remember what this song is from and what it's called. Any and all help is appreciated. Thanks!