It's a brilliantly sunny - and blazingly hot - afternoon in the leafy Chicago suburb of Highland Park, and Sting is idly walking around on the stage of the Pavilion, an outdoor theatre that extends onto an expansive lawn. In a few hours, Sting and his band, with the support of the Royal Philharmonic Concert Orchestra of Britain, will perform the first of two sold-out shows as part of the town's prestigious Ravinia Festival. The Pavilion's 3,200 seats will be filled, and the lawn will be crowded with thousands of picnickers content to hear the music from afar while dining on gourmet fare lit by candelabras...