Katy Perry forced to cancel festival set hours before performance The IndependentKaty Perry’s Belgian Music Fest Set Canceled Over “Inclement Weather”: “They Gave Me No Choice” DeadlineBelgian government cancels Katy Perry show at last minute Yahoo News UKKaty Perry’s Festival Set Canceled Over Dangerous Weather Conditions TMZKaty Perry Forced to Cancel Belgian Fest Set Over ‘Inclement Weather’: ‘Beyond My Control’ Rolling Stone