The Red Hot Chili Peppers are among the headliners at BottleRock 2020. Here they perform at Oakland Arena on March 12, 2017. Alessio Neri/Staff. The Red Hot Chili Peppers, Dave Matthews Band, Stevie Nicks, Miley Cyrus, Khalid and Anderson .Paak & The Free Nationals will headline Bottlerock Napa Valley this…

  Photos: Kyle Kohner LOS ANGELES — “How is our sound still working?” Cut Copy frontman Dan Whitford joked after a brief downpour interrupted the Aussie trio’s ’80s-inspired synth-pop set Saturday during the Air & Style festival at Exposition Park, near the USC campus. The rain sent many scurrying toward any available…