Professor Chill gave a lecture in 2018 at the Ambient @ 40 conference, which celebrated 40 years since Brian Eno released his Music for Airports album, and first coined the term Ambient Music. It discusses the ancient roots of ambient music, as well as the development of electronic dance music versions of ambient in the early UK rave scene of the late 1980s. You can see this talk on YouTube here:
professorchill.co.uk 