Sunn O))) is an American drone metal band formed in 1998 in Seattle, Washington. Known for their heavy, atmospheric sound, they often use extended guitar techniques and minimalistic compositions. The band's music typically features slow tempos and deep, resonant tones, creating an immersive listening experience. The group consists of members Stephen O'Malley and Greg Anderson, who are also involved in various other musical projects. Sunn O))) is recognized for their unique live performances, which often include elaborate lighting and visual elements. Their influence extends beyond metal, impacting genres like experimental and ambient music.