Sotto Voce maps the historical progression of the abstract white relief from the 1930s to the 1970s. It includes works by Jean Arp, Ben Nicholson, Lucio Fontana, Piero Manzoni, Sergio Camargo, Enrico Castellani, Henri Laurens, Fausto Melotti, Günther Uecker, Luis Tomasello and Mira Schendel.