What remains of a heartbeat once the body falls silent? In 53 pacemakers, Justine Salamin (she/her) works with pacemakers removed from deceased people before their funerals. Once designed to maintain the rhythm of a heart, they become sound sources in her installation. Using an electromagnetic microphone, Justine makes the devices’ electromagnetic waves, normally imperceptible to the human ear, audible. In a video, she moves the microphone across the different pacemakers, translating their activity into low frequencies. Yet this rhythm is also finite: as their batteries run out, the devices will gradually fall silent. Disappearance thus becomes part of the work itself, bringing body and technology, presence and absence into close relation.