Perhaps the most moving song I heard in 2011 was "The Shrine / An Argument" by Fleet Foxes. Off the album
Helplessness Blues, the song conveys so much emotion and intricacy that...well, it's hard to surpass.
What's even more amazing is the music video, directed by Sean Pecknald (brother of Robin Pecknald), that was released to accompany this song. I don't say it often, but if you hit play on this track, pause it. Watch the video instead. It'll blow your mind. Lots. It's by far (in my opinion) the best video released this year.