With the majority of the 2015 festival lineups set, Chicago’s Lollapalooza announced their official lineup this morning. During the three-day summer event, Paul McCartney , Metallica , and Florence and the Machine will headline the festival, while the likes of A$AP Rocky , The Weeknd , Kid Cudi , Tyler, the Creator , and more performing throughout the weekend. Along with the announcement of the lineup, tickets and passes are now on sale and can be purchased from Lolla’s site.