No spoilers, but I found the OST from the Battle at Winterfell on YouTube (thank the various gods, I've listened to it a couple times now). Ramin Djawadi deserves at least three Emmy's for this. I can't think of a better soundtrack for an episode of TV, and I'm a series snob (the greatest shows are the Sopranos, the Wire, Mad Men, Breaking Bad, and the X-Files, not in that order and fight me). The tension he builds throughout the episode is amazing. Parts of it remind me of the Joker theme from Dark Knight (probably the greatest character theme of all time), dark tones and mechanical ticking slowly evolving into madness. And that slow piano build at the end, a throwback to Cersei and the Sept scene (one of my favorites). Such despair and loss in every moment; the music keeps dragging and dragging, but in a wonderful way that keeps increasing the despair, hopelessness, and tension. Then the strings kick up at the end in a flourish worthy of the conclusion.
I know there has been criticism of this episode, but the music is a masterpiece. Kudos Ramin.