Psytrance

What it tastes like

Psychedelic trance — psytrance — was born in Goa, India in the early 90s when DJs from Israel, the UK, and the rest of Europe converged on the beach scene with DAT tapes, modular synths, and large quantities of LSD. Acts like Hallucinogen (Simon Posford), Astral Projection, and Infected Mushroom built the sound: a relentless 140–150 BPM offbeat bassline + modal lead lines + alien sound design that still soundtracks forest festivals from Boom (Portugal) to Universo Paralello (Brazil) to Ozora (Hungary).

A bar in and you’ve got it: a kick on every quarter note at 140–150 BPM, an offbeat bassline (the iconic “psy-bass” — eighth notes between the kicks), and modal arpeggios in Phrygian or Hijaz scales drifting across the chord changes. The sound design is otherworldly — ring modulation, granular synthesis, FM glitches, ethnic samples chopped beyond recognition.

The chord moves

Psytrance loves modal/chromatic descents more than diatonic harmony. The classic move is i–VII–VI–i in natural minor, but Phrygian (with the b2) and Hijaz (with the b2 and major 3) modes are also common — they give the genre its “Eastern” / “Middle Eastern” / “psychedelic” color.

Use --key "F# minor" --chord minor --pattern arp and let the lead lines wander modally over a static bass.

The groove

Kick on every quarter note at 140–150 BPM, hard and dry. Offbeat bassline on the eighth notes between kicks — this is the “1-and-2-and-3-and-4-and” pattern that defines psytrance. Open hat on the 16th-note offbeats for forward momentum. Snare is rare; when present, it’s on bar 4 for accent.

The bassline AND the kick are the rhythm engine — they lock in tightly and don’t budge for 8 minutes. All variation comes from filter sweeps, lead-line evolution, and FX automation.

The sounds

• Bass: short-decay saw bass on the offbeat eighth notes. Filter modulated by an LFO synced to the kick. Punchy, mono.
• Kick: tight 909-derivative kick on every quarter. Sub-tuned for impact.
• Lead/arp: detuned saw or FM patch playing modal arpeggios. Long delay and reverb tails. Filter movement across 16-bar phrases.
• Pad: optional, low in the mix. Sustained drone.
• FX: ring-modulated noise, vocal samples (often spoken-word philosophical samples — Terence McKenna, Alan Watts), granular pads, alien glitch sounds.

Production tells

Want it modern? Cleaner low end, more refined sound design, less noise. Modern psytrance (progressive psy, full-on revival) is more polished while keeping the tempo and offbeat bass.

Want it 1998-Goa-vintage? Saturate the bass. Use older synths (Nord Lead, Access Virus). Lots of trippy vocal samples. Wider stereo on the leads. Master at -10 LUFS for analog warmth.

python jamburgr.py --key "F# minor" --style psytrance --progression i,VII,VI,i --pattern arp --output-mode pack --out ./jams/psytrance