The song "Pretty Hurts" was written by Beyoncé, Ammo, and a woman that started her career as a singer in what acid jazz band?
Pretty Hurts:  The song was written by Sia, Beyoncé and Ammo, and its production was handled by the former two. Sia (musician):  She started her career as a singer in the local Adelaide acid jazz band Crisp in the mid-1990s.
Crisp