DOVER, DE - JUNE 19: Musician Paul McCartney performs onstage during day 2 of the Firefly Music Festival on June 19, 2015 in Dover, Delaware. (Photo by Theo Wargo/Getty Images for Firefly)
DOVER, DE - JUNE 19: Musician Paul McCartney performs onstage during day 2 of the Firefly Music Festival on June 19, 2015 in Dover, Delaware. (Photo by Theo Wargo/Getty Images for Firefly)