BOOM, Belgium (AP) — Fans roared in excitement and organizers sighed with relief as the Tomorrowland music festival kicked off Friday — just two days after a massive fire engulfed the main stage and threw one of Europe's biggest summer concert events into doubt.

A festival spokesperson said in an emailed statement that a 35-year-old Canadian woman fell ill at the event Friday and was hospitalized. But organizers were told Saturday morning she had died.

Thousands of dance music fans are enjoying the Tomorrowland festival in Belgium this weekend after heavy metal heroes Metallica stepped in to save the event from cancellation. The main stage for the huge EDM event in the town of Boom in Belgium's Antwerp province was decimated by fire this week, just days before the gates were due to open.