BJ Nilsen (SE/NL) is a Swedish sound artist and composer based in Amsterdam. His work investigates the relationship between field recording, sound, space, and perception. Through subtle electronic processing and meticulous editing, he transforms environmental recordings into layered, immersive soundscapes that blur the boundary between reality and imagination.

His upcoming release, True than Nature (2025) on Ideologic Organ, extends a 30-year career encompassing original scores and sound design for music, film, visual art, and performance. His most recent album, Irreal (2021), was released on Editions Mego.

Nilsen began releasing music in 1991 under the moniker Morthond on Sweden’s Cold Meat Industry. Between 1998 and 2015, he issued work as Hazard and BJ Nilsen on the UK label Ash International / TOUCH. His extensive collaborative practice includes projects with Karl Lemieux, Stilluppsteypa, Sigtryggur Berg Sigmarsson, Anla Courtis, Janitor, Ragnar Jónsson, Judith Hamann, Chris Watson, Jóhann Jóhannsson, Hildur Guðnadóttir, Franz Graf, Claudia Schumann, Anthea Caddy, Z’EV, choreographer Örjan Andersson, and visual artist Femke Herregraven.