Definition
Psytrance is a psychedelic offshoot of trance that emerged from the Goa beach party scene in early-1990s India, where European travellers, Israeli ex-military producers, and local sound systems built an outdoor-first style separate from the European club lineage. Its defining features are a rolling 16th-note bassline (the "psy bassline") that creates a galloping rhythm distinct from straight four-on-the-floor trance, tempos in the 140–150 BPM range, and densely layered surreal sound design that openly references altered states of consciousness. Where European trance is engineered for cathedrals of light and lasers, psy is engineered for sun, dust, and 14-hour outdoor sets.
The early-1990s Goa scene gave way to a wider international circuit through the late 1990s, when Israeli labels including HOMmega Productions (founded 1997 in Tel Aviv) industrialised the sound and exported it. Goa trance, the genre's direct ancestor, used long melodic motifs and 303-style acid lines; modern psytrance dropped the explicit Eastern-mode melodies and pushed the bassline forward. Subgenres include full-on (the most melodic, festival-oriented variant), progressive psy (slower, more groove-focused), darkpsy and forest (faster, more abstract), and hi-tech. Boom Festival in Portugal and Ozora in Hungary are the scene's main European anchors. Astrix, Vini Vici, and Infected Mushroom are among the producers who took the sound to global mainstream audiences from the 2010s onward.
Production traits are easy to identify. The kick and bass interlock in a tight 16th-note pattern with the bass on every off-step, producing the unmistakable "boom-tsk-boom-tsk" gallop. Lead synths are FM- or wavetable-based and modulated heavily, often with pitched-down spoken-word samples or filtered atmospheric textures sweeping across the stereo field. Breakdowns are shorter than in uplifting trance and tend to release into bassline rather than into a lead.