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By Mark Anderson, created in collaboration with Liam Walsh.

A captivating sound-world that comes alive through an ever-changing outdoor live performance. Using an ensemble of visually striking ‘instruments’ – gongs, bells, whistles and explosive events – Warning Notes gives a voice to the social and ecological alarm rippling across our planet. A hypnotic and playful invitation to contemplate our future together.

“a remarkable musical installation…immersive, arresting, sometimes strangely beautiful.” The Oxford Times

“Anderson has spent his professional career creating audio visual alchemy that uses light, heat, vibrations, electricity, oscillating chemicals and paraphernalia to dazzle our eyes and startle our imaginations.” Richard Wilson


For everyone – from children to adults. Workshop and accessible performances available.

Warning Notes has toured across the UK and beyond, including: La Mercè Festival Barcelona 2025, Milton Keynes International Festival 2025, Timber Festival and SIRF 2024 (supported by Without Walls and co-commissioned by Timber Festival and OCM), Oriel Plas Glyn Y-Weddw Pwllheli 2024, Wye Valley River Festival 2024, Blaenafon Ironworks 2024, Oxford 2023 (co-produced by OCM and the Cultural Programme, part of IF), Oriel Davies Gallery 2023, Tŷ Unnos Citrus Arts 2023, Ruthin Craft Centre 2023.

For further information about booking Warning Notes, contact Victoria Larkin, victoria@ocmevents.org

Image credits: Hugh Warwick, Giles Bennett