My friend, Ryan, turned me on to this one with his Ultimate Bedtime Mix. My only other exposure to Aphex Twin was his electro-punk which I never got into, but his ambient stuff is incredible. This is from the cassette and vinyl version of Selected Ambient Works Volume II and is easily the best track in the collection. It is available on CD on a collection which took a while to track down, but it was worth it. Put on your headphones, lie down and enjoy.
“Stone in Focus”