With Klanglicht, the Berlin-based video artist Boris Seewald transforms cutting-edge hearing science into a swirling spectacle of colour, choreography, and emotion. The project explores a radical new concept: “hearing with light,” using optogenetic cochlear implants to imagine restored hearing in a richer, more natural form. We caught up with Boris Seewald to discuss the collaboration, personal resonance, and how 2,500 hand-drawn frames brought the sound of the future to life.