O Yuki Conjugate is an enigmatic British music group known for their unique blend of ambient, experimental, and world music influences, which they have been refining since their formation in the early 1980s. Often cited as pioneers of the "fourth world" music style, a term coined by trumpeter Jon Hassell to describe a culturally hybrid music form combining features of various world ethnic traditions with modern electronics and ambience, O Yuki Conjugate have crafted an auditory experience that is as mystifying as it is emotive.

The collective has seen various members come and go, with the central figureheads often being Roger Horberry and Andrew Hulme, whose stewardship has carried the band through shifts in style and multiple hiatuses. The band's work, exemplified in releases such as "A Tension of Opposites" series, "Sleepwalker," and "Equator," showcases a deep atmospheric soundscape, often marked by organic textures and hypnotic rhythms. "Sunchemical" and "Undercurrents" perfectly encapsulate their philosophy of creating timeless music that evades easy categorization. With a discography that wanders through ambient terrains, industrial soundscapes, and tribal rhythms, O Yuki Conjugate remain an elusive but influential force in the world of experimental sound.