Two exhibitions, “Outer/Body” and “Neighbouring Frequencies,” open as part of Amsterdam’s FIBER Festival. The former expands on the eponymous festival theme with multi-disciplinary works by, for example, Marco Donnarumma, Sissel Marie Tonn, Dani Ploeger, and Hedwich Rooks that probe the boundaries of embodiment. The latter presents sound sculptures and installations by Oussama Tabti, Floris Vanhoof, Els Viaene, and others to celebrate contemporary sound art from Belgium and the Netherlands.