Review: Unreleased recordings from Logos Foundation live sessions, with David Toop and Paul Burwell in Brussels, on May 7, 1977. According to Toop, they started playing together in late 1969, finding themselves wrestling with 'a new language of sound'. They studied under John Stevens in his improvisation classes at Ealing College (1971 - 1972) and also took classes at London's Africa Centre. They worked out an approach to free improvisation that expanded from simple structures and instrument combinations. Working together intensively, they explored techniques through which to 'de-condition' themselves from orthodoxies: devising exercises in listening and instrument building, studying esoteric organology, bioacoustics, environmental sound, raw music and anthropology.