Born in 1997, Xu set out performing and producing harsh noise under the alias “Berserk” since 2015. Initially, he focused on playing rough feedback from handmade instruments and synthesizers before carrying on specializes in no-input effects. Influenced by Japanoise, Death Metal, Hardcore Punk, his live performance is known for highly intense physical energy and massive volume. In 2017, he turned to combining various equipments including no-input pedals/mixer and shortwave radio to session with free improvisation musicians and folk narrator. Different to Berserk’s harsh noise approach, his works as Chia-Chun Xu emphasize more on the interaction between sounds, space, and the others. Besides working on his projects, he also runs the music label, MKUltra Productions, promoting Taiwanese and worldwide noise and experimental musicians.