BJNilsen (also known as Benny Jonas Nilsen) is a Swedish musician and sound artist known for his atmospheric ambient and experimental music. He has released a number of critically acclaimed albums and collaborated with various artists from different genres, including Fennesz, Chris Watson, and Stilluppsteypa. His work often incorporates field recordings and found sound, creating a unique and immersive listening experience. BJNilsen has also produced sound installations and audiovisual works presented in galleries and festivals around the world.