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04

"The System as an Instrument" 🎛️ Systemic Interaction & Controllerism

June 26, 2026 MTUK · London

Overview

Session #04 of Audio Buffer London — exploring systemic interactions, custom code, and generative processes for event sequencing and spatial performance.

All music producers create their own ecosystem with multiple apps in their environment; even a DAW itself is an ecosystem hosting many apps.

Session #04 looked into systemic interactions built with custom code, and explored generative processes for event sequencing and spatial performance. For this session, we hosted a round table setup — beginning with presentations from two incredible guests, followed by an in-depth, open discussion to truly unpack the subject together.

Nick Rothwell (Project Cassiel) took us on a journey through 30 years of controllerism — from MIDI processing on a Mac SE/30 with the UK's first copy of Max, to modern live coding and DAW metasurfaces. Emphasizing generative processes for event sequencing, Nick demonstrated systemic interactions with a special focus on Khyal Geometries: a Clojure-based live coding environment and matrix mixer for sequencing and performing.

Benji Fox, Head of Audio Visual at the Royal Academy of Arts, presented polybuild — a cybernetic spatial synthesiser built from custom code, synthesis hardware, and a scalable loudspeaker array. By treating each speaker as a discrete synthesised voice, polybuild collapses the distinction between sound and space. Benji demonstrated how his rule-based compositional engine enables the real-time improvisation of complex harmonic and spatial movement.

After the presentations, the floor opened for a dedicated round table discussion — tackling questions about the skills and workflows required to build and innovate within generative music ecosystems and custom controller design.

Presenters

Nick Rothwell presenting at Audio Buffer London 04

Composer, Software Architect & Senior Lecturer · Creative Computing Institute, UAL · Project Cassiel

Nick Rothwell

"30 Years of Controllerism — Khyal Geometries"

Composer, software architect, and Senior Lecturer at the Creative Computing Institute, UAL. Nick has been exploring controllerism for 30 years — from MIDI processing on a Mac SE/30 with the UK's first copy of Max, to modern live coding and DAW metasurfaces. His work Khyal Geometries is a Clojure-based live coding environment and matrix mixer for sequencing and performing, emphasizing generative processes for systemic interaction.

Benji Fox presenting polybuild at Audio Buffer London 04

Artist, Engineer & Head of Audio Visual · Royal Academy of Arts, London

Benji Fox

"polybuild — A Cybernetic Spatial Synthesiser"

London-based artist, engineer, and Head of Audio Visual at the Royal Academy of Arts. Benji's polybuild is a cybernetic spatial synthesiser built from custom code, synthesis hardware, and a scalable loudspeaker array. By treating each speaker as a discrete synthesised voice, polybuild collapses the distinction between sound and space — its rule-based compositional engine enabling real-time improvisation of complex harmonic and spatial movement.

Gallery