Psybient, also known as ambient psy, psychedelic chillout, psychedelic ambient, ambient goa, ambient psytrance and more commonly within the Goa/psytrance scene as psychill and psydub, is a genre of electronic music that combines elements of psychedelic trance, ambient, world music, new age and even ethereal wave. It often has many dub influences and can also sound somewhat like glitch. Psybient pieces are often structured around the concept of creating a "sonic voyage" or "musical journey". Although similar to psytrance's emphasis on maintaining non-stop rhythm throughout the night, psybient is far more focused on creating a vast soundscape that can be experienced over the length of an album, focusing less on beatmatching and allowing for a myriad of tempo changes. Some of the most popular and genre leading psybient artists include Shpongle, Entheogenic, Shulman, Ott, Hoopy Frood, Third Ear Audio, Doof, Warp Technique, Yestegan chaY, Younger Brother, The Infinity Project, Pitch Black, The Mystery Of The Yeti, Celtic Cross, Androcell, and Evan Bluetech.
Because of the heat, humidity, and dust in Goa, the birthplace of Goa trance (which was the earliest incarnation of psytrance), DJs tended to use cassette tapes or DATs instead of vinyl records.[1] As a result, beatmatching was very hard, and many of the earliest DJs who worked within the Goan scene didn't bother trying at all, the notorious Goa Gil being one of them. As a solution to the dilemma, a production technique developed of having relatively long atmospheric portions in each track, which would allow a DJ to easily mix two tracks of different tempos without having them clash.[2] These short periods that were free of heavy, bass driven beats acted as "chillout" periods for those who were dancing (or "tripping") to relax and regain their energy for the next track.

From its inception, goa and psytrance albums (as well as compilations) almost always contained a compulsory "chillout" track at the beginning, end, or sometimes the middle, (usually track 5) of the album, to either set the mood, give an intermission, or give a cooldown type track at the end which was the most common on the earlier days of psytrance.
Perhaps the earliest full mainstream album consisting entirely of "chill psychedelic tracks" was Mystical Experiences by The Infinity Project in 1995. This was released around the same time as Simon Posford's first Hallucinogen album "Twisted" (also of The Infinity Project) which was the first bi