Volume One is the debut album. It was the only album recorded with original 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. The image featured on the cover is taken from the Salvador Dali painting "Soft Self-Portrait with Fried Bacon". Their only album as a four piece of Al Cisneros, Matt Pike, Justin Marler and Chris Hakius.