Rolling in the Deep! Despite it being played every couple hours at work, I still love this song (probably because there have been great fanvids of some of my favorite ships set to it, and I sort of drift off, lol). I'd heard both these versions before, but I liked how they were woven together to represent Merlin and Morgana here. I only wish one of the parts had been transposed, as they are in different keys and I kept tilting my head back and forth trying to fit them together.

Although I suppose the only other option to create that great POV effect would be to use the 'Glee' version, and Morgana as Rachel is just....no. (Although Merlin and Jessie could perhaps bond over their shared love of neck scarves?)