As a ladly-loving, long-time fan of lots of bands in the post-rock genre, it's been my mission for a while now to find a post-rock band with a female front-woman or vocalist. This is about the closest I came, and I'm not disappointed. Hailing from Oxford, England, this band, which broke in 2004, was definitely sound. The vocals are not actually sung; rather, they're really creepy spoken word pieces set to dark, grinding, mostly structureless music. However, it goes down more easily than you may be anticipating.
My Elixir, My Poison (2003)
Indian Ink (2002)