From the snowballs he once hawked on a street corner to his installation that blended in among the wares of a Tribeca store specializing in African and Asian artifacts, David Hammons’ ephemeral and quotidian work has mixed wit and biting social commentary. His project in Bern, organized by Kunsthalle director Ulrich Loock, represents a departure of sorts: rather than objects for display, it’s a series of site-specific sound installations. What’s there for the visitor is a set of musical environments, explorations of blues, jazz, and rap. May 16-June 29

— Mark Van de Walle