Sunn O))) is an American drone metal band formed in 2000 in Seattle, Washington. Known for their heavy, slow, and atmospheric sound, they often incorporate elements of doom metal and experimental music. The band's name is a play on the Gibson guitar brand, and their performances frequently feature extended guitar feedback and deep bass tones. The group consists of founding members Stephen O'Malley and Greg Anderson, who are known for their unique live shows that often include elaborate lighting and visual effects. Sunn O))) has released several albums, collaborating with various artists and exploring themes of spirituality and sound. Their music is characterized by its immersive and meditative qualities.