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The Louder Than Life festival kicked off in Louisville, drawing massive crowds for its four-day run.

Slayer returned to headline after their previous year's performance was canceled due to Hurricane Helene.

The festival is expected to break attendance records, with fans traveling from all 50 states and 50 countries.

Louder Than Life , "America's loudest rock and metal festival," roared into Louisville Thursday at the Kentucky Exposition Center, kicking off four-days of live music. With more than170 acts spread across seven stages, the massive festival promises to rock, loud.

Sunny skies welcomed massive crowds clamoring to see headliners including Slayer , which returns to Louisville this week after Hurricane Helene , the seventh costliest hurricane in U.S.

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