King Joffrey is not impressed with Sigur Rós.

The Icelandic post-rockers made a cameo appearance as Joffrey and Margaery's official wedding band on last night's shocking episode of "Game of Thrones," and, unsurprisingly, they were somewhat less than well-received by the sadistic regent.

Check out the brief clip from the episode below, then listen to the group's cover of "The Rains of Castemere" further down - a rendition bassist Georg Hólm describes as "the gloomiest version so far."

A former contributor to sites including MTV's The Backlot and Bloody-Disgusting, Chris Eggertsen worked in film development before indulging his love of pop culture writing full time. He specializes in horror, the intersection of social issues and entertainment and Howard Stern. He's on Twitter @HitFixChris.