England's Glastonbury Festival went off this past weekend, with most reports coming back very positive. One band that certainly won't forget the experience is MUSE, who closed the festival with a headlining slot on Sunday night. Playing to easily their largest audience ever, the band rolled through an expansive set that many critics are calling the highlight of the festival. Muse frontman Mat Bellamy yelled to the audience, "This is the best gig of our lives," shortly before leaving the stage. Tragedy, however, struck moments later, as the father of drummer Dominic Howard collapsed and died on the festival grounds. Muse have cancelled all immediate festival appearances as a result of the death.