新しい複雑性
Barrett was born in Swansea, Wales. He began to study music seriously only after graduating in genetics and microbiology at University College London in 1980. From then until 1983 he took private lessons with Peter Wiegold. There followed fruitful encounters at the 1984 Internationale Ferienkurse für Neue Musik with Brian Ferneyhough and Hans-Joachim Hespos. In the 1980s he became associated with the so-called New Complexity group of British composers because of the intricate notation of his scores. However, he is equally active in free improvisation, most often in the electronic duo FURT with Paul Obermayer, formed in 1986, but also since 2003 as a member of the Evan Parker Electro-Acoustic Ensemble. Since 1990 about half of his compositions have been written for the ELISION Ensemble, most notably the extended works "Opening of the Mouth", "DARK MATTER", "CONSTRUCTION" and "world-line". Most of his compositions since the 1990s have involved both acoustic and electronic resources, combined in many different ways. In 2005 he and Obermayer formed the electroacoustic octet fORCH.