The Mould That Changed the World¹ (hereafter referred to as Mould) is a cheeky musical paean to , the Scottish bacteriologist who shared the 1945 for his discovery of the antimicrobial properties of the mold Penicillium. The show had a fall run in Washington, DC, coinciding with 2022, followed by performances at Emory University in Atlanta, Georgia, one of which featured a panel discussion with US Centers for Disease Control and Prevention director Rochelle Walensky.² Produced by Jess Conway of the Charades Theatre Company in Edinburgh with original songs and lyrics by Robin Hiley, Mould presents a microcosm of contemporary global conflict and change.