is a composer and sound artist based in Amsterdam. His work primarily focuses on the sounds of nature and how they affect humans. Recent work has explored the urban acoustic realm and industrial geography in the Arctic regions of Norway and Russia. Based upon his research he collaborated with filmmaker Karl Lemieux to develop the audiovisual work unearthed (2014) which was featured in the Sonic Acts publication The Geologic Imagination (2015). His original scores and soundtracks have featured in theatre, dance performances and film, in collaborations with Chris Watson, Jóhann Jóhannsson, Stilluppsteypa and others. Moreover Nilsen co-edited the book-CD The Acoustic City (jovis, 2014) and had his two latest solo albums Eye of The Microphone (2013) and The Invisible City (2010) released by the Touch label.