The seven hundred and ninth album: #709 Aphex Twin - Selected Ambient Works 85-92
These ambient tracks fade into the background by design, making it difficult to attribute too much to the sound. There's a variation between the tracks, but a lot of it is a repetitive base track with the occasional changes thrown in. That's not a bad thing here - it makes for something simple and accessible - but while they have their own identity, the tracks are, for the most part, just there. There are very occasional distorted vocals, but even those don't impart any meaning or do more than add some variety to what you hear on the track.