Brian John Peter Ferneyhough (/ˈfɜːrnihoʊ/; born 16 January 1943) is an English composer. Ferneyhough is typically considered the central figure of the New Complexity movement. Ferneyhough has taught composition at the Hochschule für Musik Freiburg and the University of California, San Diego; he teaches at Stanford University and is a regular lecturer in the summer courses at Darmstädter Ferienkurse. He has resided in California since 1987.

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