Icelandic group Of Monsters and Men is the latest musical act to make a cameo appearance on "Game of Thrones," appearing as a traveling band seen in Sunday night's devastating episode, "The Door."

They join fellow Icelandic band Sigur Ros, who played during the infamous "Purple Wedding" scene in season 4, and American metal band Mastodon, who showed up as undead Wildlings in the "Hardhome" episode of season 5.

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