Ambient is one of the oldest and most established electronic music genres. The term Ambient was first used in the 1970s, to describe the swirling, expansive synthesiser sounds of Brian Eno and Tangerine Dream, but the roots of the genre date back to the decade before that. Today Ambient comes in a number of forms, from the pared down minimalism of Pete Namlook to the lush Ambient Dub of GOL and The Orb. There are also Acid and Psychedelic forms – see Numbers 17 and 26 respectively in this chart, for example. The underlying theme which unites all forms of Ambient music however, is its slow, gentle pace. There may be rhythm, but where it does exist it is more like the ticking of a clock than anything quick enough to dance to.
Genres are helpful for finding music similar to something you already like and that is exactly what these charts are for.