The Rains of Castamere comes from George R. R. Martin's A Song of Ice and Fire and became known through HBO's Game of Thrones, where it serves as the unofficial anthem of House Lannister. The song recalls the destruction of House Reyne of Castamere after its rebellion against the Lannisters, a history that gives its gentle melody a chilling undertone. In the series it is most famously heard before the Red Wedding, warning attentive viewers of impending betrayal. Since then, fans have reused the theme in edits, memes and dramatic videos as shorthand for looming doom and ruthless power.