Psychedelic trance, often referred to as psytrance, is a form of trance music that developed from goa trance in the early 1990s. Trance generally has a fast tempo, in the range 125 to 150 beats per minute (bpm), compared to other genres of electronic music such as house, techno, ambient, etc. Both goa and psychedelic trance pieces generally feature a strong bassline sequenced with the Roland TB-303 on an extremely low octave that beats continuously without or with subtle change, often overlaid by many rhythms (with a consistent 4/4 time signature), futuristic samples, and melodies. The emphasis is placed strongly on purely synthesized elements. The original Goa trance was often made with popular analogue synthesizers and later with hardware samplers, the preference in Psychedelic trance has moved to sample manipulation and storage in VST and AU software sampler applications, including Native Instruments Kontakt. Use of analogue synthesizers for sound synthesis has given way to digital "virtual analogue" Subtractive synthesizer instruments like the Nord Lead, Access Virus, Korg MS-2000, Roland JP-8000 and computer VST and AU plugins like Native Instruments' Reaktor. These are usually controlled by host commercial sequencer applications such as Logic and Cubase. Completely software-based algorithms and studios are also increasingly popular in commercial sequencer applications and other self-contained modular applications i.e. Propellerheads Reason and Fruity Loops.
Psytrance is most popular in the UK, Israel, Japan, Australia, Brazil, South Africa, Netherlands, and Goa. The genre is not as well known outside its "scene" as anthem or progressive trance is.