Jürg Frey was born in Aarau in 1953. After finishing his studies at the Conservatoire de Musique de Genève, he began a career as a clarinetist.
Until the age of 40, his work as composer remained mostly private, behind his activities as a clarinetist, family man, festival organizer and clarinet teacher for children.
In the early 1990’s he became a member of the wandelweiser composer collective, an experience of inspiration, challenge and long lasting friendships.
In this time also begins his international activities.  He developed his own language as a composer and sound artist with the creation of wide, quiet sound spaces. His work is marked by an elementary non-extravagence of sound, a sensibility for the qualities of the material, and precision of compositional approach. Sometimes his compositions bypass instrumentation and duration altogether and touch on aspects of sound art.

Jürg Frey has particularly often been the guest of small, creative concert organizers such as Klangraum Düsseldorf, music we’ d like to hear (London), Ny Musik Boras (Sweden), The Dog Star Orchestra (Los Angeles), Neufelden (Austria) The Miniaturist Ensemble (New York), Klang im Turm (Munich), (Chicago), Louth Contemporary Music Society (Ireland), the wulf (Los Angeles), and Ordinary Affects (Boston).
 He has also received invitations from renowned institutions such as MaerzMusik (Berlin), Interpretations (New York), the Centre Culturel Suisse (Paris), Constellations (Chicago), Time:Spans (New York) and Donaueschingen Musiktage (Germany).
His recordings are published by Edition Wandelweiser Records (Germany),b-boim records, (Austria), L’innomable records (Slovenia), Irritable Hedgehog (US),Cathnor (UK), Grammont (Switzerland) Erstwhile Records (US) New Focus Redcordings (US) ftarri (JAP), Another Timbre (UK) and elsewhere (US).
In 2010 he was the guest composer at the Other Minds Festival of New Music in San Francisco.  In 2015 he was the Composer in Residence at the Huddersfield Contemporary Music Festival (UK)