Hardwave Alerts · Artist-to-Artist
DJ Thera — From Brennan & Heart to Music Produced From The Heart
A conversation with Pieter Heijnen about the early hardstyle years, creative freedom, Theracords, Tranceparency and the music that keeps him inspired
Some artists have helped shape hardstyle from its earliest days. For this Hardwave Alerts Artist-to-Artist conversation, DJ Thera (Pieter Heijnen) looks back on his first steps in electronic music, the formation of Brennan & Heart with Fabian Bohn and the personal challenges surrounding the end of that partnership.
He also talks about returning to music on his own terms, building Theracords around creative freedom, exploring different sounds through Tranceparency and the role of collaboration in his work.
This is Pieter's story in his own words — from the early years to the ideas that still drive him today.
The Early Days
1. Let's go right back to the beginning. Before hardstyle even had its own identity, what first attracted you to harder electronic music, and what inspired you to start producing your own tracks?
I was a huge fan of electronic music in the '90s, with quite a wide range of tastes — from The Prodigy and eurodance to the heaviest hardcore. I've always been interested in it, actually!
2. How did you and Fabian Bohn first meet, and what made you realise that producing music together could become something more serious?
We went to the same school in Panningen and first met at a local club. We were both already creating music, and when I moved to Tilburg to study journalism, Fabian told me he would move there too for his studies. Then we decided it would be cool to live in the same student apartment so we could produce music together — and so we did!
Brennan & Heart: The Beginning of an Era
3. Before Brennan & Heart, you worked together under the Bass Driver name and produced Fatal Invasion. What do you remember most about those early studio sessions, and how experimental was the sound you were creating?
We were literally producing whatever inspired us. We would often listen to new music in vinyl stores, which would influence us, and we'd take those influences back with us when creating new music.
4. How did the Brennan & Heart project come together after Bass Driver? What kind of musical identity were you and Fabian trying to build at that time?
At first, we were just using lots of different aliases. That seemed to be what most producers were doing. But we decided it would be good to come up with a name that would also work well for DJ performances. The B&H name came from the first letters of our last names, and after brainstorming together, we came up with Brennan & Heart.
5. Your early performances included Multigroove, followed by increasingly prominent bookings. Do you remember the moment when you realised Brennan & Heart was becoming an important part of the emerging hardstyle scene?
Basically, it became clear as we got more bookings. It was fun to realise that the music we were making before the word 'hardstyle' was even around had become a genre in itself!
6. What was the creative dynamic between you and Fabian in the studio? Did you each bring different strengths or musical influences to the productions, and how did you make creative decisions together?
Fabian was always super strong on the technical side of things, while I always loved the creative part the most. But every track was different and went through a different process, so it's too black and white to say that was the only way we worked. A track also never seemed finished until we decided it was finished enough, lol.
7. Looking back at the Brennan & Heart discography and your performances together, which track, release or live moment still means the most to you personally, and why?
I don't like ranking tracks because music isn't a competition in my mind. So when I get a question like this, it's more about what comes to mind first rather than really putting a track at 'number one'.
In this case, I'd go for 'We Are Possessed', as we got the idea when visiting an abandoned graveyard in the Chicago area that was supposed to be haunted. We tried to record vocals for the track right there on our laptop, but the laptop didn't work because the battery was empty. Back at the hotel, we opened the laptop again, and all of a sudden the battery was full! Huh? Very suspicious! With that experience in mind, we created the track.
8. As Brennan & Heart became more popular around 2005, how did growing expectations from audiences, promoters and the music industry affect your creative direction and the way you worked together?
It put a lot of pressure on us. At least, that's how it really felt for me, and I was personally struggling a lot to live up to those expectations we had actually just put on ourselves. It took a toll on me and on my mental health.
9. You have previously spoken about differences in musical vision and creative freedom during that period. Looking back today, what would you say were the main reasons behind the decision to end Brennan & Heart in 2005, and how do you view that decision now?
I always wanted to produce whatever came to mind, regardless of whether a track became a hit or not. That's difficult when there's quite a bit of success and you want to build on that. So obviously we had our differences about that.
Looking back now, though, we simply lacked proper communication. I felt way too much pressure, which made me super anxious, stressed and eventually even depressed, but I was too ashamed to communicate about it. With all that was going on, and with us not having good communication, it became obvious that we couldn't continue the project anymore.
The Rebirth as DJ Thera
10. After Brennan & Heart ended, you stepped away from producing for a period. What was that transition like personally and creatively, and what eventually motivated you to return to music?
I simply had to heal from my depression, and during that healing period, I eventually realised that I just wanted to make music I liked, regardless of the outcome, and that I should just do it. I approached it as a hobby: no pressure, not measuring success. Just making music I love.
11. The name Thera is an anagram of Heart. Was keeping that connection to your previous artist identity important to you, or did the name take on a completely new meaning as your solo career developed?
I thought it would be a nice gimmick that also wasn't too obvious, because I didn't want to use the Brennan & Heart period to gain success or attention. I just wanted to build something for myself.
12. When you returned to producing, you faced difficulties finding labels willing to release your particular style of hardstyle. What made you stay committed to your own sound rather than adapting to what was commercially popular at the time?
Because I don't want to produce whatever others want. I want to produce what I enjoy and love. And when that doesn't match the current market, I always think: at some point, the market will eventually appreciate it, because this is awesome music! Hahaha.
Theracords: Building an Independent Label
13. During the Brennan & Heart years, you were already involved with the Zero2Nine label. How much did that early experience influence your decision to establish Theracords in 2008?
I really liked having my own imprint, having that independence and not having to please A&R managers — which, at that time, was much more difficult, as releases were still being pressed on vinyl. So when I was struggling with sending demos, I immediately looked into just releasing the music myself.
14. Theracords became known for supporting unconventional and harder sounds. What did you originally want the label to represent, and how has that philosophy evolved over the years?
The tagline 'Music Produced From The Heart' is still the main philosophy, and it always has been. Complete artistic freedom for artists to produce what they want and focus on uniqueness.
15. You've worked with many distinctive producers through Theracords. When discovering new talent, what matters most to you beyond technical production quality, and what makes an artist stand out?
Literally, the uniqueness. Hearing within seconds that an artist has their own sound and style is still super exciting and the most important thing!
16. You've collaborated with artists such as Geck-o and Wavolizer over the years, but collaborations can also be a very personal creative process. How do you generally approach working with other producers, especially those you don't know personally or haven't worked with before? What makes a collaboration interesting enough for you to consider, and how important is having a personal connection with the other artist?
It begins with the idea: how would both sounds blend together? If that inspires and excites me, then there's a basis for a collaboration. It doesn't always work out, but that initial question is the most important.
17. As someone who is both a producer and a label owner, how do you balance creative freedom with the business realities of running a label? Have your priorities changed after so many years in the industry?
I have a great team around me, and that definitely helps! And, as always, it's important to have a good balance between the roles.
Tranceparency and Musical Evolution
18. Your music has always explored the boundaries between hardstyle, hard trance and techno. What inspired you to develop Tranceparency, and what creative possibilities does it offer that are different from Theracords?
Genres evolve, and although my own approach has never changed that much, I now find myself in a music industry where I could be labelled a trance, techno or hardstyle artist. I feel that with Theracords, I already have an outlet that caters to the more hardstyle-oriented stuff, but I didn't have one for the more trancy stuff.
Also, to keep developing myself, I still like exploring new music. Current trance and techno releases seem to have a lot of influences from the '90s and '00s, which is where my personal taste has always tended to go too. With Tranceparency, I can still go wherever my inspiration takes me, and I can decide per release which label is the best fit.
19. Your 2026 releases, including Drift Away and Captain Obvious, highlight different sides of your musical identity. How do you decide which direction a new production should take, and do you approach hard trance and hardstyle differently in the studio?
I love that I still produce with the same intention as always: from inspiration only! Sometimes an idea pops up, and I just go with it. That then shows the diversity I have.
20. Through your Tranceparency mixtapes and DJ performances, you bring together different styles and eras of harder electronic music. What makes a truly memorable musical journey for you, and how do you balance nostalgia with fresh sounds?
That's obviously very subjective, but I think it just comes down to what you feel while listening to a track.
Reflections and the Future
21. You've experienced hardstyle from its earliest days to the present generation. What do you think the scene has gained, what might it have lost along the way, and what advice would you give to independent producers or label owners trying to build something of their own?
One thing I find exciting is that we seem to be moving more and more away from genres and boxes. People can enjoy multiple genres, and artists are able to release music across multiple genres too. I see that as an absolute win.
Other than that — and I'm probably showing my age here, haha — I don't like the importance of social media. Without a social media presence, having a unique sound alone is no longer enough, so it's much harder nowadays to break through as an artist.
22. After everything you've achieved with Brennan & Heart, DJ Thera, Theracords and Tranceparency, what still excites you most about making music? Is there a creative goal or new chapter that you're particularly looking forward to?
It's pretty simple. I make music I like without thinking that others will like it too. Creating something from scratch that ends up being a finished track, and then noticing that people enjoy it, still feels like a great reward. That keeps motivating me to continue my crazy journey!
Closing
23. Is there anything else you'd like to share with the Hardwave Alerts community, or something about your journey that you feel doesn't get discussed often enough?
I want to give some good advice here. If you like an artist and their music, share it and comment on their posts. It helps the artist massively!
If you don't like an artist, refrain from expressing it online. By expressing it, you actually give that artist more reach. It can then end up with your favourite artists getting zero attention while the ones you don't enjoy get way more. Focus on positivity and support!
Closing note
Thank you, Pieter, for sharing your story so openly with Hardwave Alerts.
Stay locked to the hardwave. ⚡