Professor Julian Henriques is convenor of the MA Cultural Studies programme, director of the Topology Research Unit and co-founder of Sound System Outernational research group in the Department of Media and Communications, Goldsmiths, University of London. Previously Julian was head of film and television at CARIMAC at the University of the West Indies, Kingston, Jamaica. Julian researches street cultures, music and technologies including those of the reggae sound system. He has credits as a writer-director with the feature film Babymother, a reggae musical, the improvised short drama We the Ragamuffin and as a producer with numerous BBC and Channel Four documentaries; a sound artist with the sculpture Knots & Donuts at the Tate Modern, a founding editor with the Ideology & Consciousness journal and as an author with others Changing the Subject: Psychology, Social Regulation and Subjectivity and the monographs Sonic Bodies: Reggae Sound Systems Performance Techniques and Ways of Knowing, and Sonic Media: the Street Technology of the Jamaican Sound System.