Sigur Rós cameos on Game of Thrones, covers 'The Rains of Castamere'

Icelandic band Sigur Rós made an appearance on Game of Thrones as minstrels at the wedding of Joffrey Baratheon.

"The Rains of Castamere" is a recurring song in HBO's Game of Thrones. Its most famous appearance is at the Red Wedding in season three, but it shows up in several episodes prior -- whistled by Tyrion Lannister in episode one of season two, "The North Remembers"; in episode nine of season two, "Blackwater", sung in the closing credits by rock band The National; and episode two of season three, "Dark Wings, Dark Words".

The mournful song has appeared yet again -- at the wedding of Joffrey Baratheon to Margaery Tyrell, by none other than experimental Icelandic band Sigur Rós, with drummer Orri Páll Dýrason, bass player Georg Hólm and singer Jónsi Birgisson providing their own dirge-like interpretation.

"It felt like a natural thing to make our version of 'Rains of Castamere'," Hólm wrote in a statement. "We probably managed to create the gloomiest version so far. It is maybe not the happiest wedding song, but we think that it fit the scene very well."

The sound does fit beautifully -- although it's slightly odd to hear Birgisson, who usually sings in a made-up language called Vonlenska, singing in English.

The song is available for purchase on iTunes. Listen to both Sigur Rós' and The Nationals' versions below.