Our data

updated August 15, 2026

We're building the most accurate concert agenda in the Netherlands. This page explains what that means, how the agenda is put together, and where the limits are.

One show, one page

The same concert is often on sale several times over: a standard ticket, an early bird, a package with a drink, sometimes through more than one seller. We fold all of that into a single event and list the ticket options underneath it. You get one page per show, not one page per ticket type.

The time on the page is the start time

Sources don't all publish the same clock: some print the time the doors open, others the time the music starts. We check that per source and store the start of the show as the start — with the doors time next to it where it is published. It sounds like a detail, and it is the difference between walking in on time and standing outside for an hour.

Where it comes from

We read venues' own programmes directly, alongside the official ticket feeds, and re-read them continuously. Reading the venue itself matters: a large part of the Dutch club circuit doesn't sell through the big ticket platforms at all, so an agenda built on ticket feeds alone simply cannot see those shows.

What we don't invent

Prices, availability and sold-out status come from the seller. We don't estimate them, and when a seller publishes no price we leave the field empty rather than make something of it. Background texts about artists are compiled from public information; they are not press releases we're passing on.

What we don't claim

Not every concert in the Netherlands is on Tourspider. Coverage differs per venue and per region: some stages we read the same day they announce, others we do not read yet at all, and small-scale and free programming is the hardest to see. “The most accurate” is about how we handle the data we do have — the folding, the times, the prices — and not a claim that we have all of it.

Missing a show, or found something wrong? Let us know through the contact page. Corrections are made by hand, and they stay: a manually corrected record is not overwritten by the next automatic update.