Brian John Peter Ferneyhough 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.

Darmstädter Ferienkurse is a regular summer event of contemporary classical music in Darmstadt, Hesse, Germany. It was founded in 1946, under the name "Ferienkurse für Internationale Neue Musik Darmstadt", as a gathering with lectures and concerts over several summer weeks. Composers, performers, theorists and philosophers of contemporary music met first annually until 1970, and then biennially. The event was organised by the Kranichsteiner Musikinstitut, which was renamed Internationales Musikinstitut Darmstadt (IMD). It is regarded as a leading international forum of contemporary and experimental music with a focus on composition. The festival awards the Kranichsteiner Musikpreis for performers and young composers.