Details: Volume One is the debut album. It was the only album recorded with second guitarist Justin Marler, before he became an Orthodox monk. Volume One showcases a darker sound and stronger doom metal influence than Sleep's later work.

Tracklist:

1. Stillborn
2. The Suffering
3. Numb
4. Anguish
5. Catatonic
6. Neuchadnezzar's Dream
7. The Wall of Yawn
8. Prey
9. Scourge