Open Union is an experimental music duo made up of composer-performers Peter Bell (modular synthesiser) and Patrick Ellis (electric guitar) based in the UK.
Described by the treasured composer Howard Skempton as being, ‘sometimes subtle and unstable; sometimes rich and dense’, the duo aims to build up strong collaborative relationships to create new works. Their current collaborators are Christine Cornwell, Wilson Leywantono, May Chi, Paolo Griffin and Seán Clancy.
The duo have performed across the UK at events such as SAOM, Ealing Extranormal, AMOK, Don’t Mind Control, Birmingham Modular Organisation and CODA Festival. In 2023, they undertook a mini tour of The Netherlands as part of the Sounding Here concert series, where they performed at Splendor in Amsterdam and Batavierhuis in Rotterdam.
In 2025, they co-hosted a portrait concert with saxophonist David Zucchi featuring music by Paolo Griffin at the Hundred Years Gallery, and earlier that year, they supported Passepartout Duo at Centrala Space, Birmingham as part of their UK Tour.

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