In this June 27, 2015 file photo, singer Pharrell Williams performs on the Pyramid Stage at Glastonbury music festival at Worthy Farm, Glastonbury, England. Williams, One Direction and Florence + The Machine are going to appear at the Apple Music Festival next month. Apple announced Tuesday, Aug. 18, 2015, that the musicians will be among the headliners at the 10-night festival at Londons Roundhouse that begins Sept. 19. (Photo by Jim Ross/Invision/AP, File)