Mavis Staples, Nicki Bluhm and The Gramblers, Fantastic Negrito, Eric Burdon and The Animals, WAR and Malian duo Amadou and Mariam will perform at this year’s Stern Grove Festival. The free, 10-week summer music festival at Sigmund Stern Grove Park, a summer tradition, is celebrating its 80th anniversary this year.…

The producers of the annual Stern Grove Festival today announced that Grammy Award-winning funk band Kool and the Gang will headline the festival’s 80th anniversary Big Picnic kick-off show. The event will take place June 25 this year, with local soul artist Quinn DeVeaux opening. The admission-free concert will take place at…