Sunn O))), formed in 1998, is an American drone metal band known for their heavy, slow, and atmospheric sound. The band consists of members Stephen O'Malley and Greg Anderson, who create music characterized by deep, resonant guitar tones and minimalistic compositions. Their performances often feature elaborate lighting and a focus on the physical experience of sound. The band's name, pronounced "Sunn O)))" (like "sun"), is a nod to the Sunn Amplification company, which produces high-powered amplifiers. Sunn O)))'s music often explores themes of spirituality, darkness, and the natural world, making them influential in the underground music scene.