sunnborisaltar.com: "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."