My first try at this was lost due to programmer incompetence so now I'll make it short and sweet. Julia Kristeva - "eruptions" of primal speech. Captured perfectly roughly 3:00 in to "Double-Barrel Prayer", with a nattering, chattering clamor of overdubbed Diamandas. Far scarier than any street rap, some of the scariest stuff I've ever heard - up there with early-period Swans, only I'm more afraid of Diamanda's demon-channelling than Michael Gira's regressive howls.
This originally appeared in NYLPM.