Conversation so far:
who sings rains of castamere on game of thrones?
The Rains of Castamere is by the indie rock band The National and sung by their vocalist Matt Berninger.
who is the producer of song The Rains of Castamere from Game of Thrones?
Ramin Djawadi
who wrote the song The Rains of Castamere from Game of Thrones?
The song's lyrics were written by George R. R. Martin in the original novel, and the tune was composed by Ramin Djawadi in 2011
did the song The Rains of Castamere from Game of Thrones chart?
The Sigur Rós version made it to 132 on the French Singles Sales Chart.

Question: did the Sigur Rós version appear on the show?
Self-contained rewrite: did the Sigur Rós version of The Rains of Castamere appear on the show Game of Thrones?