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Sunn O))) performs at the Southwest Terror Fest III. Appropriately enough, after nearly 40 minutes of demonic drones, chilling vocals enter. Watch at your peril, and beware nightmares to come.

A Les Paul and scary-looking dudes in robes? Yep—Sunn O))) brought their brand of terror to Berlin in this 2006 live clip.

The robed members of Sunn O))) present their drone metal stylings in the foggy, mystical setting of a Belgian church.