Infomation:
----------------------------
Sunn O))) & Boris - Altar

Tracklist:
1. Etna (9:51)
2. N.L.T. (3:50)
3. The Sinking Belle (Blue Sheep) (7:38)
4. Akuma no Kuma (7:53)
5. Fried Eagle Mind (9:47)
6. Blood Swamp (14:46)

Japanese Edition Tracklist:
1. Etna (9:51)
2. N.L.T. (3:50)
3. The Sinking Belle (Blue Sheep) (7:38)
4. Akuma no Kuma (7:53)
5. Fried Eagle Mind (9:47)
6. The Sinking Belle (Black Sheep) (5:05)
7. Blood Swamp (14:46)

Japanese Vinyl Edition Tracklist:
A. Etna (9:51)
B1. N.L.T. (3:50)
B2. The Sinking Belle (Blue Sheep) (7:38)
C1. Akuma no Kuma (7:53)
C2. Fried Eagle Mind (9:47)
D1. The Sinking Belle (White Sheep) (4:23)
D2. Blood Swamp (14:46)

Altar Prelude Tracklist:
1. Her Lips Were Wet With Venom (SatanOscillateMyMetallicSonatas) (featuring Dylan Carlson from Earth) (28:14)

Altar Prelude is available on the US and Japan special editions, and on all vinyl editions.