Stern Grove Festival to return to in-person performances next month “The return of live music marks a joyful part of San Francisco’s recovery,” said Mayor Breed in a statement. Lily Janiak May 20, 2021Updated: May 20, 2021, 3:07 pm San Francisco Ballet performs during the Stern Grove Festival. Photo: Santiago Mejia, Special to the Chronicle 2015 After Stern Grove Festival canceled its summer season last year for the first time in more than eight decades, San Francisco Mayor London Breed announced the free music and dance series is returning to the Sunset District’s Sigmund Stern Grove with a full slate of live performances in 2021.