Musical AI harmonises with your voice in a transcendent new exhibition

The Call
Holly Herndon and Mat Dryhurst
Serpentine North, London Closes 2 February 2025

Step into London’s Serpentine North gallery and the first thing you see is an organ. But it is far from a conventional instrument with gleaming flues and reeds. This organ is made up of fans used to cool graphics processing units. Each fan whirs at a pitch that depends on its oscillation, and the sounds combine in an otherworldly hymn…