Arboreal Lightning


Arboreal Lightning is a large-scale interactive lighting installation by atmos that transforms sound and gesture into an immersive, fluctuating, luminous environment – specifically designed for the Camden Roundhouse. Its activity is generated by both amateurs and professionals – artist performers and a wider audience – creating a performative stage beacon that activates programmed performances, and also serves as an interactive public installation outside concert times.

Arboreal Lightning is the centrepiece and graphical icon for the 4-day Reverb Festival of Contemporary Classical Music – a smorgasbord of contemporary composers, with an emphasis on technological innovation. It was commissioned by both the Roundhouse venue and the Reverb curator, acclaimed musician Imogen Heap, who will then modify and use it on her year-long world tour.



Weds 20th Aug

12:00-23:00 All day access
18:30-21:00 Private View
19:00-19:15 Alex Haw Presentation
20:00-21:00 Tree Jam

Thurs 21st Aug

17:30-18:30 Pre-gig Access
18:30-23:00 On Stage during Performances
23:00-00:00 Post-gig Access

Fri 22nd Aug

18:00-23:00 On Stage during Performances
23:00-01:00 Post-gig Access

Sat 23rd Aug

18:00-23:00 On Stage during Performances
23:00-01:00 Post-gig Access

Sun 24th Aug

18:00-23:30 On Stage during Performances
23:30-01:00 Post-gig Access


You have designed a thing of beauty. I am so excited to know it’s going to come to life. I want the whole world to see it! Your work is fabulous.

Imogen Heap, Muse & Commissioner

The Roundhouse is thrilled to host this exciting and unique installation at the heart of this year’s Reverb Festival. Arboreal Lightning is one of the most astonishing and ambitious installations our building has ever seen.

Dave Gaydon, Head of Music, Roundhouse

Arboreal Lightning is a monumental feat of invention – an innovative exploration into light and sound, and a beautiful piece of art reflecting the themes of this year’s Festival.

Rachel Nelken, Reverb Festival Producer, Roundhouse



Concept, Design & Fabrication

Atmos is a multidisciplinary art + architecture + design practice that works across scales and media, from small-scale product-design to large-scale master-plans. We specialise in bespoke private homes and public installations.

Adam Stark

Software Design

Adam Stark is a researcher, computer scientist and musician based in London. In 2011 he completed his Ph.D. at Queen Mary University of London on digital signal processing and audio analysis in live musical performances and installations.

Architainment Lighting

LED sponsorship

Architainment Lighting  is a specialist project lighting company working in the architectural and entertainment sectors across the UK.  Architainment Lighting have kindly sponsored the LED lights for this project. 



Microphone Sponsorship

The Pursuit of Perfect Sound – Sennheiser offers high quality design and the legendary Sennheiser sound. They have kindly sponsored the microphones.

Imogen Heap


Imogen Heap is a british ecclectic, eccentric and innovative musician considered by some the epitome of a digital diva. Her talent spans from the craft of songwriting to elaborate live multi-instrumental improvisations, building on a unique voice, classical training and unusual tech-saviness.

John Nussey

Technology Support

John Nussey is a creative technologist based in London. His work covers many areas, including physical computing, creative coding, interaction design and product prototyping.  John Nussey will be working with us on technology support for this project.

The Cutting Room

CNC Routing Service

The Cutting Room has often partnered successfully with atmos. They have more than 18 years of CNC experience in the UK and world market, and provide an unparalleled service.


A Space to Build

Makerversity is a work space for start-up making and manufacturing businesses, and applied learning opportunities. They kindly sponsored us with a space to build the 1st phase of the project.



A Masive thanks to the 60+ volunteers, we could not have done it without you.



Thanks to the Roundhouse for proving a wonderful venue for the installation.



At last, a day when we can grow the trunk! The tree begins

First Opening

Imogen Heap introduces the Tree!

A Luminous Bark!

Check out the hairs that grow from the long exposure!


Coming to Life!

Preparing the Trunk

Trunk Fabrication

Weaving LEDs

Building the Lights  

Our Amazing Volunteers

Thanks to our volunteers

“TreeJ” software

Adam’s been combining audio and light

Arboreal Lightning Volunteers

Volunteers with us for free Imogen Heap tickets

Arboreal Lightning interactive installation

We’re entering our final weeks of production

Prototyping for the Roundhouse

We’ve been testing Arboreal Lightening in Brick Lane

Reverb festival

Check out our Arboreal Lightening graphics

Arts Council England Funding

We’ve been funded by Arts Council England


lottery_jpeg_white---950x200left_950 Arboreal Lightning has gratefully received generous support from the Arts Council England,Roundhouse, Imogen Heap and Radius Music; it is supported using public funding by the National Lottery through Arts Council England 
 With massive thanks to Tim Meadowcroft, Fiona Greenhill, Liz Counsell, Dave Gaydon, Marcus Davey and the fabulous team at the Roundhouse; Rachel Nelken; Imogen Heap’s team; Mark Wood at Radius MusicKelly Snook; Nick Archdale & Tim Edwards at Pharos Controls; Jak Drinnan; Sinead Mac Manus and Edil Samatar at Fluency; Stuart Knox at LEDLinear; and Thomas Ermacora.


The Main Space, Roundhouse, Chalk Farm Road, London NW1 8EH

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