This year’s headliners, who will perform across at least seven stages at Maier Festival Park, range from singer-songwriter Noah Kahan (fresh off a sold-out Miller High Life Theatre show in February) to University of Wisconsin graduate and tongue-in-cheek rapper Yung Gravy to Oscar-winning hip-hop veterans Three 6 Mafia to indie rock royalty Fleet Foxes, The War on Drugs and Japanese Breakfast.