http://www.nicovideo.jp/watch/sm7266289
Some guy on Nico did a piano arrange of far and cage, along with another awesome surprise at the end. The quality
sucks, but the quality shines through regardless. If anyone finds any higher quality versions, please let me know.
Contains light ep4 spoilers in the background (well, and the choice of the final track), so if you haven't read it and want to listen, just let it roll in the background.