Kimberley Ann Deal (born June 10, 1961) is an American singer-songwriter and multi-instrumentalist. She was bassist and co-vocalist in the alternative rock band Pixies, before forming the Breeders in 1989.Deal joined Pixies in January 1986, adopting the stage name Mrs. John Murphy for the albums Come on Pilgrim and Surfer Rosa. Following Doolittle and the Pixies' hiatus, she formed the Breeders with Tanya Donelly, Josephine Wiggs, and Britt Walford. Following the band's debut album Pod, her twin sister Kelley Deal joined, replacing Tanya Donelly.