There was a time many winters ago when the sign that a band had “made it” was to get an appearance on The Simpsons. But that was a long time ago, and now it seems like more and more bands are heading over to Westeros to get some respect. According to EW, Sigur Rós are following their own appearance on The Simpsons with a guest spot on the fourth season of Game Of Thrones, and we don’t just mean a song during the ending credits, though it’s safe to assume they’ll do that too. What they will do on the show is undisclosed as of now, but I’d bet it’ll have something to do with what’s going on in the North — who knows, maybe they’ll play a sad, glacial version of the Wilding folk-song, “The Last Of The Giants,” which would be roughly appropriate for where they’ll be in the story once Season 4 hits. Discuss below, but let’s go easy on the spoilers.