The project was initiated in London in or around 1980 by Nigel Ayers (b. 1957) together with collaborators Danny Ayers(b.1964) and Caroline K (b.1957- d.2008). From early in their work, the group concentrated on the axiom of music being a form of social control, and highlighted concepts such as information overload, cult conditioning, brainwashing and subliminal advertising, in a critique of information society. Their music drew heavily on worldwide folk traditions as well as that of the European avant-garde. One of their earliest performances was in a railway arch in Atlantic Road, Brixton, while the 1981 Brixton riots raged outside. Since 1984 Nocturnal Emissions has continued mainly as Nigel Ayers' solo project. Line-up has varied from one to a dozen musicians. Nocturnal Emissions temporary members have included net artist Stanza, Ben Ponton of Zoviet France and (somewhat bizarrely) life coach Fiona Harrold. Nocturnal Emissions is a sound art project that has released numerous records and CDs in music styles ranging from electro-acoustic, musique concrète, hybridised beats, sound collage, post-industrial music, ambient and noise music. The sound art has been part of an ongoing multimedia campaign of guerrilla sign ontology utilising video art, film, hypertext and other documents. Nocturnal Emissions were later to be associated with the Kernow section of the Association of Autonomous Astronauts and to feature in a best-selling story by the novelist Stewart Home.