David Toop has been developing a practice that crosses boundaries of sound, listening, music and materials since 1970. This practice encompasses improvised music performance (using hybrid assemblages of electric guitars, aerophones, bone conduction, lo-fi archival recordings, paper, sound masking, water, autonomous and vibrant objects), writing, electronic sound, field recording, exhibition curating, sound art installations and opera. It includes seven acclaimed books, including Rap Attack (1984), Ocean of Sound (1995), Sinister Resonance (2010) and Into the Maelstrom (2016), the latter a Guardian music book of the year, shortlisted for the Penderyn Music Book Prize. In 2017 his autobiography – Flutter Echo: Living Within Sound – was published by Du Books in Japan. He is currently Professor of Audio Culture and Improvisation at London College of Communication.