wikipedia -
CocoRosie is an American musical duo formed by sisters Sierra (Rosie) and Bianca (Coco) Casady in 2003. Stylistically, they may be assigned to the indie rock or psych folk genres, and are sometimes associated with the New Weird America (or freak folk) movement; additional influences include hip hop and Opera.


Sierra and Bianca Casady are American half-Cherokee sisters. Sierra, the older of the two, was born in Iowa, and Bianca was born in Hawaii. Their mother nicknamed them Rosie and Coco, respectively, from which their musical act takes its name.

Their estranged mother, a teacher and artist, would compulsively move the girls across the country from one state to another. Their estranged father traveled around the US teaching in Steiner Waldorf schools, and was involved in Shamanism and Peyote religion. Sierra and Bianca spent their summers hiking from reservation to reservation with their father.