COCOROSIE - La Maison De Mon Rêve LPLimited Algae Sea Vinyl. (20th Anniversary Edition) CocoRosie is Bianca and Sierra Casady. Sierra sings and plays guitar and flute. Bianca sings and does percussion (rattles things, makes things squeak, shakes a gold chain belt). They write all the music together. La Maison de Mon Rve was written and recorded in a tiny apartment in the 18th district of Paris during the spring of 2003. La Maison de Mon Rve was released by Touch and Go Records in March