‘London Onion’, Kurt Schwitters’ love-letter to the city that became his home, has been turned by artists Iain Forsyth & Jane Pollard into ‘Londonion’, a pocket-sized mega-mix of the original, updated for the present as a digital app. Centred on a performance of the poem by comic Stewart Lee, the piece combines verbal and sonic pyrotechnics with the potential for audience interaction that Schwitters encouraged in his art. The app responds to the random sounds and fluctuating noise-levels of the immediate surroundings and is supplemented by short introductory videos about the project that will be disseminated on YouTube and elsewhere, introducing ‘Londonion’ to a wider online community.