Tickets for one of the Chicago’s most anticipated summer music events go on sale on Thursday morning. The iconic, annual Ravinia Festival is set to release tickets for the more than 100 concerts scheduled for this summer at 8 a.m. CT on Thursday. This year’s lineup features big names like Paul Simon, Brandi Carlile, Ricky Martin, Chance the Rapper, Bonnie Raitt and more. Ravinia released tips for those hoping to score tickets this year on their …