For decades at the San Francisco Opera, there have been other not-so-secret performances happening offstage.
Patrons are the usual cast members, but sometimes it’s sopranos and bassos too. The shows are much smaller scale but still eye-popping and grand — even operatic — for their platform, which is the human body.
From a longtime perch in a shop in the War Memorial Opera House’s mezzanine, designer Masha Archer has sold statement jewelry with the heft of body armor and beads like berries or cherry tomatoes bursting with juice…