In Soft Goods, Karen Sherman animated dancers, theater technicians, a whole bunch of lights and stage machinery, and the Walker Art Center’s entire McGuire Theater. The premise was a tech rehearsal for a production that we never saw. But then we witnessed many performances in this 90-minute event: light and shadow shows, taped and live narratives that overlapped like an Altman movie, dancers working things out and obeying their choreographer’s every command, techies coiling cables and traveling up Genie Lifts. There were moments of vaudeville, film noir, rock-show ambiance, pure dance, and silly moves, all rhythmically controlled yet totally unpredictable. Sherman illuminated the beauty of stage machinery and made us realize the vulnerability of those both center and backstage. She used all the bells and whistles of the well-equipped McGuire stage without ever resorting to gimmickry or overkill. She wrapped us in a sensurround experience.