Rezz at Red Rocks Amphitheatre has been rescheduled to Thursday, September 2nd, 2021 There is nothing you need to do as your tickets will be valid for the new date. AEG Presents is thrilled to announce REZZ live at Red Rocks Amphitheatre on Thursday, September 2nd, 2021. Download the Red Rocks app before your visit. From digital ticketing with touchless entry, mobile ordering with express beverage pickup, park and venue maps, visitor tips, original Red Rocks content and more, the official Red Rocks app has everything you need for an unforgettable concert experience.