Eno famously developed his conception of ambient music while recuperating from a car accident. Stuck in his hospital bed, he couldn't adjust the volume of some music a friend had brought him. After struggling for a while to hear it, he realized it was better to just let it meld with all the other sounds in the room. (He may also have been on a shit-ton of morphine.)
Among other things, this confirms one of my long held but controversial beliefs that artists do drugs, and sometimes it works out pretty good. [UPDATE: It also works for Adele.]
The article also included a number of tracks to help demonstrate five influences identified, which include i) ambient soundscapes (Tracks 1 and 2), ii) theatrical flamboyance (Tracks 3 and 4), iii) songs as collages (Tracks 5 and 6), iv) the use of guitar with echo and swirl to create awesome (it's pretty scientific) (Tracks 7 and 8), and v) a methodical, intellectual approach to creativity (Tracks 9 and 10).
Coincidentally, Eno's got a new album out called Drums Between the Bells. You can check it out on Rolling Stone.