NHK yx Koyxen is the moniker of Kouhei Matsunaga, a prolific Japanese artist and producer known for his innovative contributions to electronic and experimental music. Born in Osaka in 1978, Matsunaga has carved out a niche in the landscape of underground music with his unique blend of glitch, techno, and abstract sound design, creating an immersive auditory experience that defies easy categorization. He started his musical journey in the late 1990s and has since collaborated with a range of influential artists while also pursuing his own solo projects.

Matsunaga’s work as NHK yx Koyxen often features a complex interplay of rhythms and textures, resulting in compositions that are at once cerebral and visceral. His discography is marked by a restless exploration of sonic possibilities, as demonstrated in releases such as "Exit Entrance" and "Doom Steppy Reverb," which showcase his talent for crafting soundscapes that are both disorienting and hypnotic. The "Climb Downhill" series and "Reflexes" continue this trend, displaying a penchant for deep, pulsating beats juxtaposed with intricate electronic motifs. NHK yx Koyxen has steadily gained recognition within avant-garde and electronic music circles for his uncompromising approach and continues to push the boundaries of what is possible within the realm of sound.