Sunn0))) and Boris

Sunn O))) (pronounced sun) is an American experimental band known for its synthesis of diverse genres including drone, ambient, noise, doom metal and black metal. Supported by a varying cast of collaborators, the band has two core members: Stephen O'Malley (also ofKhanate and Burning Witch) and Greg Anderson (of Goatsnake)

Boris (ボリス Borisu?) is a Japanese experimental rock band, known for often combining and switching between different music genres including drone metal, noise rock, psychedelic rock and ambient. As of 2008, personnel are drummer-vocalist Atsuo, bassist-guitarist-vocalist Takeshi, and guitarist-vocalist Wata.

The “Altar” album is NOT a split album. “Altar” is a collaboration album between sunn 0))) and boris that is a result of both bands conceptualizing, writing and recording the album together as one entity. Both groups have stepped outside their previous sounds and created a wholly unique album that stands on its own unique ground. There are elements of each groups trademark sound within the album but true to each groups progressive and experimental aspects, “Altar” moves into a completely new dimension.