See an Outdoor Concert at Ravinia Ravinia Festival has announced its summer concert lineup, preparing to reopen the park for the first time in more than a year for an in-person 2021 season. The summer lineup will include 64 performances between July 1 and Sept. 26, organizers said, and will be the 85th season in Ravinia's history as the oldest outdoor music festival in the country. Some of the featured pop, rock, indie, country and reggae artists in the lineup this year include: Classic Albums Live: Led Zeppelin IV, July 24 Yacht Rock Revue debuts at Ravinia, July 31 Sideline makes its Ravinia debut, August 11—Carousel Concert