While he certainly isn't a household name, Hardwell is definitely a hit among young dance music fans.
Dozens camped overnight or queued for hours on a Belfast street yesterday in pouring rain for a ticket to his show at the Odyssey Arena in February.
For the uninitiated, Hardwell, aka Robbert van de Corput (25), was named the world's number one DJ in the 2013 DJ Mag Top 100 DJs Poll.
His hits include Spaceman, Three Triangles (Losing My Religion) and Apollo.
Tickets went on sale at 10am at DV8 in the city centre.
Molly Quinn (16), from Belfast, began her long wait for tickets at 7pm on Sunday evening along with her friends.
She said: "It was good fun out here – even though it was cold – because they'd music playing."
But not everyone was happy.
"We only got seating tickets, so we are a bit disappointed they were all sold out," said 21-year-old Shona Kelly.