Epicenter festival

Fans get wet before the concert on Saturday at the Auto Club Speedway.  (Lawrence K. Ho / Los Angeles Times)

A platinum-selling pillar of grunge in the ‘90s, Bush returned with a performance at the Epicenter festival on Saturday.  (Lawrence K. Ho / Los Angeles Times)

Concert-goers stand under the mist at a concession stand to cool off.  (Lawrence K. Ho / Los Angeles Times)

Gavin Rossdale, right, and Corey Britz of Bush perform.  (Lawrence K. Ho / Los Angeles Times)

Gavin Rossdale of Bush gets into the crowd.  (Lawrence K. Ho / Los Angeles Times)

Gavin Rossdale of Bush plays for the crowd.  (Lawrence K. Ho / Los Angeles Times)

Gavin Rossdale, left, and Corey Britz of Bush perform.  (Lawrence K. Ho / Los Angeles Times)