Dave Grohl and Wolfgang Van Halen have combined their considerable talents to prank tens of thousands of fans attending this year's Welcome To Rockville festival, held at the Daytona International Speedway in Florida.
The incident took place during Foo Fighters' headline set at the weekend, when the usual mid-set detour into the career of drummer Josh Freese was interrupted by Grohl's insistence on grabbing the spotlight for himself.
