For me, a masterpiece and opener of the great 2012 album ''Allelujah! Don't Bend! Ascend!'.
At number 3: "Mladic" by Godspeed You! Black Emperor.
Not a "friendly" (that's how I'm wording it) listen. Listen to it if you at least are into the cover art of the album, an advice. It's an around 20-minute listen SO IF YOU DON'T LIKE WASTING TIME on Post-rock, you can just pass. Enjoy (if you want).