Ambient Spotlight wouldn’t be complete with at least one album from the ‘godfather’ of Ambient music, Brian Eno, who is generally known for introducing the term ‘Ambient Music’ back in the 1970s.
His first complete ambient album was Ambient 1: Music for airports, which was released in 1978 on his own Ambient label. This album was one of a series of 4 ambient albums, labeled Ambient 1 to Ambient 4, all having a quite different atmosphere.
Eno’s inspiration for making Ambient 1 came after being stuck at Cologne Bonn Airport in Germany in the mid 70s. He had to spend several hours there and was extremely annoyed by the uninspired sound atmosphere. Eno’s definition of ambient music: "music that can be actively listened to with attention or as easily ignored, depending on the choice of the listener", and that exists on the "cusp between melody and texture."