Selected Ambient Works, Volume II (1994)

Richard D. James credited this album to his lucid dreaming, and most of its tracks were released untitled, which suits music that feels like rooms nobody can name. Long, hazy synth tones drift over muffled pulses; some pieces are lullabies, others sound like machinery humming in the dark next door. It is long, so treat it as a place to sink into rather than something to study. Intensity: mostly calm, with a few genuinely eerie stretches. One of the best nighttime listens on this list.