Derran “Derry” Brownson, the longtime and founding keyboardist of the early-1990s UK dance-rock band EMF, dies at 55. The band announces his death in a social media post, and multiple reports note that his recent treatment involved a brain tumour.

According to outlets, Brownson had been open about his condition, saying last year that he was battling a brain tumour. Tributes follow from the music community, while EMF remembers him as a close bandmate and friend. Sources also highlight his role in EMF’s success, including his contribution to the group’s 1990 hit “Unbelievable.”