David Toop is a composer/musician, author and curator based in London who has worked in many fields of sound art and music, including improvisation, sound installations, field recordings, pop music production, music for television, theatre and dance. He has published five books, including Ocean of Sound, Haunted Weather, and Sinister Resonance: The Mediumship of the Listener, released eight solo albums, including Screen Ceremonies, Black Chamber and Sound Body, and as a critic has written for many publications, including The Wire, The Face, Leonardo Music Journal and Bookforum. Exhibitions he has curated include Sonic Boom at the Hayward Gallery, London, Playing John Cage at Arnolfini, Bristol, and Blow Up at Flat-Time House, London. Currently writing a two-volume book on free improvisation - Into the Maelstrom: Improvisation, Music and the Dream of Freedom - the first volume will be published by Bloomsbury in 2016. His opera – Star-shaped Biscuit – was performed as an Aldeburgh Faster Than Sound project in September 2012. He is Chair of Audio Culture and Improvisation at University of the Arts London.