# Frequencerz

Canonical: https://www.hdrr.info/artists/frequencerz

- Genres: Hardstyle
- Tracked releases: 185
- Latest release: 31 Oct 2025
- Spotify followers: 81,544
- Spotify popularity: 49/100

Frequencerz are Niels Koster and Pepijn Hol, a Dutch hardstyle duo who went from a 2005 internet friendship to co-founding Roughstate, one of the genre's defining labels.

Frequencerz began as a division of labour: Pepijn Hol founded the project in 2005 but couldn't perform as a DJ, so he went looking for one, and found Niels Koster, an internet friend who completed the duo. Two decades later they sit at the centre of [hardstyle's](/new-hardstyle-releases) raw wing.

### From Fusion to the main stage

Early support came from the genre's establishment: Deepack closed the Defqon.1 2008 main stage with their track 'Tomorrow and Beyond', and in July 2009 Fusion Records signed the duo. Tracks like 'Wolfpack', 'Renegades' and 'The Unknown' turned them from promising newcomers into festival fixtures.

### Building Roughstate

In March 2015, Frequencerz co-founded Roughstate together with [Ran-D](/artists/ran-d), [Adaro](/artists/adaro) and [B-Front](/artists/b-front) (a label that has since defined the polished, festival-scale end of [rawstyle](/new-rawstyle-releases)), and the same year launched [B-Freqz](/artists/b-freqz), the joint live act they share with B-Front. They also used that platform to make scene history: at Qlimax 2017 they unveiled [Rejecta](/artists/rejecta) by playing his unreleased tracks to a packed GelreDome, a co-sign that launched his career overnight.

### Two decades deep

The duo marked their anniversary with the '10 Years of Hardstyle' album on Roughstate, and they remain one of the acts other producers trust with premieres. Their catalogue keeps expanding alongside the label circle they built with Ran-D and Adaro.

Every new Frequencerz release lands on the [Hardstyle Release Radar](/playlists/hardstyle-release-radar) the day it hits Spotify. The full tracked catalogue is listed above.

### FAQ

**Who are Frequencerz?**

Frequencerz is the Dutch hardstyle duo of Niels Koster and Pepijn Hol. Hol founded the project in 2005 and recruited Koster as its DJ; the two knew each other through the internet before ever sharing a studio.

**What label are Frequencerz on?**

Frequencerz release on Roughstate, the label they co-founded in March 2015 together with Ran-D, Adaro and B-Front. Before that they were signed to Fusion Records from 2009.

**What are Frequencerz' best-known tracks?**

'Wolfpack', 'Renegades' and 'The Unknown' are their signature tracks, and their sets are known for premiering unreleased Roughstate material.

**What did Frequencerz have to do with Rejecta?**

At Qlimax 2017, Frequencerz revealed the then-unknown Rejecta by dropping his tracks 'Followed' and 'Deserve To Die' during their set, one of the most famous artist launches in hardstyle.