CLAESSENS
A high-energy hard techno artist.
CLAESSENS is a force of nature on stage, delivering high-energy DJ sets that fuse hard-hitting beats with melodic and vocal elements. His signature style has taken him across the globe, playing at major festivals and many renowned clubs. Born and raised in Utrecht, The Netherlands, Tony Claessens grew up in his father’s studio complex, where he was immersed in music from an early age. He learned to play multiple instruments, including drums, keys, and guitar, and by age 12, he left school to become a professional drummer, teaching music and touring with bands. In 2009, he transitioned to electronic music, launching his career as Tony Junior, which led to international hits, major collaborations like with Steve Aoki and Tiësto, and appearances in mainstream media, including reality TV and film. By 2024, after intense studio experimentation, he refined his sound: hard, energetic, yet melodic and emotional, embracing a fresh artistic freedom. With this evolution, Tony decided to retire his Tony Junior alias: “I am not that kid anymore. Tony Junior stands for my past. I had fun. I am inspired by the past, but I am not defined by it. CLAESSENS is of course my real name. Using CLAESSENS represents that I want to do something really different from what I used to do. In the future, I want to forget about the industry side of things and just make great music and do great shows for great people!”
Upcoming Events
Past Events
Venues where CLAESSENS plays
What kind of music does CLAESSENS play?+
CLAESSENS plays hard techno - high-energy and polished. CLAESSENS is a force of nature on stage, delivering high-energy DJ sets that fuse hard-hitting beats with melodic and vocal elements.
What are CLAESSENS live shows like?+
CLAESSENS's live sets are tight and high-energy - technically precise with real physical intensity.
When is CLAESSENS performing next?+
CLAESSENS plays in Amsterdam on Saturday 27 June. There are 2 CLAESSENS shows currently listed on Mood.






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