The Orb's Adventures Beyond the Ultraworld

Adventures Beyond the Ultraworld turned the chill-out room into a double album with a thesis, jokes and 'Little Fluffy Clouds', proving ambient house could be as ambitious and as funny as anything happening on a dancefloor. It invented a genre as a place rather than a sound: dub echoes, collage, comedy and long stretches of drift all fit inside the same two-hour universe.

Two hours built as an environment rather than a sequence, by people who ran the room next door to the dancefloor and understood it needed its own music. It proved this scene could sustain something at album scale before anyone else managed it, and it did so by not behaving like a rave record at all. That is what places it here rather than higher.

Two hours of samples, weather, Minnie Riperton and jokes. The sprawl that dates its peers is exactly why it still works.