EVIDENCE / TRANSPARENCY

Sources and method

The reading stays clean; the evidence stays one click away. Here is what supports the archive, what remains provisional and how we correct errors.

22 FONTES INDEXADASREVISTO 03.09.2026PT-PT + ENVERSÃO 0.2

Editorial rule

Historical facts require a published source or at least two identified, independent witnesses. Oral memory can enter the archive as testimony before it is treated as fact. Event dates always carry a verification date and source link.

1PRIMARY SOURCE PREFERRED
WITNESSES FOR ORAL FACT
DATECHECK STAMP ON LIVE DATA

Bibliography and digital sources

01

What Are the Roots of Boom?

Boom Festival / Good Mood Lda

Origin at Herdade do Zambujal, Águas de Moura, Setúbal.

OPEN SOURCE
02

Boom 1997 Gallery

Boom Festival

Official visual record of the first edition.

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03

Boom Festival 2027

Boom Festival

Official dates and location of the 30-year edition.

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04

30 Years of Boom Festival: Microfilm 1

Boom Festival

Oral history and moving images published by the organisation.

OPEN SOURCE
05

ZNA Gathering 2026

ZNA Gathering

Mission, location and the official retro-futurist edition.

OPEN SOURCE
06

Lost record stores of inner Auckland — Cyberculture

AudioCulture / Iwi Waiata

Documented history of Cyberculture on Karangahape Road, 1993–97.

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07

Portugal — Psytrance Labels

PsyDB

21 Portuguese imprints — 19 organisations — and 122 releases, read on 3 September 2026.

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08

Crystal Matrix Records

Discogs

Founded in 2003; catalogue of the Portuguese label.

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09

Psycultures: The Globalization of Goatrance

Institute of Network Cultures

An interview published on the institute's blog — not a peer-reviewed article, and cited here as what it is. Useful on transnational history and the cassette and DAT culture from Goa onward.

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10

Flying Away: Electronic Dance Music, Dance Culture, Psytrance and New Sounds in Portugal

Paula Guerra · in Exploring Psychedelic Trance and Electronic Dance Music in Modern Culture, ed. Emília Simão, Armando Malheiro da Silva e Sérgio Tenreiro de Magalhães (IGI Global, 2015), pp. 307–334

Peer-reviewed chapter, DOI 10.4018/978-1-4666-8665-6.ch013. Academia.edu's automatic citation credits the wrong person as the book's editor; the reference above is the correct one. It gives the academic framing for the growth and practices of the Portuguese scene.

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11

Trance events in Lisbon

Shotgun

Current event listings; every entry must be confirmed with the promoter.

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12

Upcoming Events — Portugal

Goabase

International database of Goa/psytrance parties and festivals.

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13

Flow Group — About

Flow Records

Founded in 2000 by João Garcia (Pena); the label’s evolution.

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14

Flow Records — catalogue

PsyDB

34 releases documented between 2000 and 2009.

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15

Digital Oracle Records — catalogue

PsyDB

Five CDs associated with the Portuguese label.

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16

Boom Festival — 1997 flyer reproduction

Trancentral

Dates, promoters, line-up and the graphic language of the first flyer.

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17

New Zealand electronic-music directory

Hyperreal

Contemporary record of Cyberculture’s Auckland address and contacts.

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19

Introduction to Psytrance Cultures

Graham St John / Dancecult

Academic history of Goa trance culture and its global circulation.

OPEN SOURCE
20

Fungi Records Label Party — 27 June 2008

Goabase

Historical record with line-up, location and directions.

OPEN SOURCE
21

Psybertech Festival 2008

Last.fm archive

Event trace with date, venue, promoter, décor and line-up.

OPEN SOURCE

Cyberdeck sounds

The Cyberdeck plays real recordings, not just synthesis. They come from Freesound under Creative Commons licences — most CC0 (public domain) and two under attribution, credited below. The engine, the patterns and the code are ours and stay CC0. The kick, bass and acid are synthesised live in the browser; the shouts, whistles, horns, percussion and crowd are real people.

CC0 1.0: public domain, no credit required — we credit anyway because it is right. CC BY: free to use, commercially included, with credit to the author, which is here and in the file.

Corrections

A correction does not disappear silently. We record the previous claim, the change, the source and the date. Send documentation through Contribute; no personal address is published.

READ ALL 16 LOGGED CORRECTIONS →

EVIDENCE / THIS PAGE

Where this page comes from

Last verified · 2 corrections logged

  1. PEER-REVIEWED Flying Away: Electronic Dance Music, Dance Culture, Psytrance, and New Sounds in Portugal Paula Guerra, in Exploring Psychedelic Trance and Electronic Dance Music in Modern Culture, ed. Emília Simão, Armando Malheiro da Silva & Sérgio Tenreiro de Magalhães (IGI Global, 2015), pp. 307–334

    DOI 10.4018/978-1-4666-8665-6.ch013. Note: the automatic citation on Academia.edu misattributes the book's editor — the editors are Simão, Malheiro da Silva and Tenreiro de Magalhães.

    Read 2026-09-03

  2. PEER-REVIEWED Neotrance and the Psychedelic Festival Graham St John — Dancecult: Journal of Electronic Dance Music Culture 1(1), 2009, pp. 35–64

    DOI 10.12801/1947-5403.2009.01.01.03. Fieldwork at Boom 2006 and 2008. Its statement that the 1997 edition was held at Idanha-a-Nova is contradicted by Boom's own record and by Pereira et al. (2023) — see the corrections log.

    Read 2026-09-03

  3. PEER-REVIEWED Além do quotidiano: a procura de transformação na liminaridade do Boom Festival (Portugal) Tiago Pereira, Octávio Sacramento & Pedro Gabriel Silva — Sociedade e Cultura, vol. 26 (2023), e73961

    DOI 10.5216/sec.v26.73961. Peer-reviewed and the most precise source on the first Boom.

    Read 2026-09-03

  4. PRIMARY What Are the Roots of Boom? Boom Festival / Good Mood Lda

    The organiser's own account of its origins.

    Read 2026-09-03

  5. PRIMARY Lost record stores of inner Auckland Simon Grigg — AudioCulture (published 3 January 2015, updated 4 May 2023)

    Grigg was a participant in the scene he documents; close to primary testimony.

    Read 2026-09-03

  6. DATABASE Portugal — psytrance labels index PsyDB

    Read 3 September 2026: 21 labels, 122 releases. Three of the 21 are one organisation (Flow Records, Flow Vinyl, Hyperflow Records), so the figure counts imprints, not companies.

    Read 2026-09-03

  7. PRIMARY ZNA Gathering — mission, history and programme Zambu Productions Lda

    Read 2026-09-03

  8. DATABASE Crystal Matrix Records Discogs

    Read 2026-09-03

  9. DATABASE Portugal — party and festival listings Goabase

    The country index we sweep for Portuguese listings. Read 3 September 2026: no listings at all between November 2026 and June 2027.

    Read 2026-09-03

  10. DATABASE Flow Records — catalogue PsyDB

    Read 2026-09-03

  11. DATABASE Digital Oracle Records — catalogue PsyDB

    Read 2026-09-03

  12. SECONDARY Boom Festival Trancentral (August 2016)

    Reproduces the 1997 flyer image, captioned only 'Boom Festival first edition flyer – 1997'. It does not state the August dates or name the producers; an earlier version of this page cited it for both, which was wrong — see the corrections log.

    Read 2026-09-03

CORRECTED ON THIS PAGE

  • 2026-09-03 — A wrong citation is an archival error even when the fact it supports is right. And presenting a blog interview as academic literature inflates the weight of the evidence. see the log →
  • 2026-09-03 — An exact figure without its definition is a half-truth. see the log →

A claim without a source does not stand on this page as fact. Where the evidence does not exist, we say so. If you find an error, write to us through the Contribute page — we fix it and log the correction with its date.

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