X-Calibur

Hailing from Amsterdam, Peter Klaassen, better known by his alias X-Calibur, has been a defining voice in the hardcore scene since the ’90s. As the iconic voice behind Tellurian’s notorious anthem “Fucked-Up Motherfuckers” and the gritty Hard Techno track “Big Bad City,” Peter made his mark early with raw energy and unmistakable presence.

Before his rise in the hardcore world, Peter was part of the hip-hop formation DP Digital Power, showcasing his versatile roots in rhythmic storytelling. He later teamed up as Magnum & Exodus for the release of the Unbelievable E.P. on Point 44 Records, further expanding his sonic repertoire.

Under the name X-Calibur, Peter released the hard-hitting track “Sanzia,” an original ’90s hardcore production that epitomizes the Cenobite sound—dark, driving, and uncompromising. The track was also featured on the compilation CD 2H2H – Too Hard To Handle, cementing its place in the history of classic hardcore.

All of his projects have been mixed and mastered at the Cenobite HQ Studio, staying true to the underground spirit that defines the genre.

With deep roots in both hip-hop and Hardcore, X-Calibur stands as a true representative of the old-school sound that shaped a generation. Though modest in scale, his work remains a small but significant contribution to the scene—one that continues to echo through the darker corners of the underground.