Traffic congestion is anticipated on Refshaleøen near Copenhagen Saturday evening due to the Tobias Rahim concert. Authorities are advising attendees to consider alternative routes and exercise caution.

The concert is expected to draw a large crowd to the island in Copenhagen harbor, a venue previously used for events like the Copenhell metal festival.

The announcement for what the organizer, DTD Concerts, called Tobias Rahim’s biggest concert ever was made in January.

Tobias Rahim, the 35-year-old musician, is famous for songs like “Stor mand”, “Mucki Bar” and “Bellevue”.