John Cowan of the Doobie Brothers performs on stage during San Francisco Fest 2016 at AT&T Park in San Francisco, Calif., on Sunday, Sept. 4, 2016. (Jose Carlos Fajardo/Bay Area News Group)
Music fans take a selfie as The Doobie Brothers perform on stage during San Francisco Fest 2016 at AT&T Park in San Francisco, Calif., on Sunday, Sept. 4, 2016. (Jose Carlos Fajardo/Bay Area News Group)
Kenny Lee Lewis of The Steve Miller Band performs on stage during San Francisco Fest 2016 at AT&T Park in San Francisco, Calif., on Sunday, Sept. 4, 2016. (Jose Carlos Fajardo/Bay Area News Group)
