Lisa Gerrard of Dead Can Dance, one of the few successful women musicians who made the transition to film composer (she won a Golden Globe for her work on ‘Gladiator’), wrote and performed the music for 2002’s ‘Whale Rider’–and she didn’t have to date writer-director Niki Caro to do so. Gerrard might seem an unlikely choice: when I briefly worked in a women’s sex shop in the 90s, the store owner told me not to play Dead Can Dance on the sound system because they scared away customers. But Gerrard’s score for ‘Rider’ does what the best movie music is supposed to do: reinforcing the drama of the film without calling unnecessary attention to itself.