CocoRosie is an American folk band. The members are sisters Bianca "Coco" and Sierra "Rosie" Casady. They have released five studio albums. These are "La maison de mon rêve", "Noah's Ark", "The Adventures of Ghosthorse and Stillborn", "Grey Oceans", and "Tales of a GrassWidow". CocoRosie have also composed two film scores.