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Sunn O))) (pronounced "sun") is an American experimental metal band from Seattle, Washington, that formed in 1998. The band is known for a heavy and slow sound, that blends diverse genres including drone, black metal, dark ambient and noise rock, and for very loud live performances. The band's core members are Stephen O'Malley (also of Khanate and Burning Witch) and Greg Anderson (of Goatsnake and Engine Kid).