By Associated Press
Updated March 28, 2014 at 12:00 PM EDT

Deadmau5 is stepping in for an ailing Avicii at one of electronic dance music’s largest festivals this weekend.

Avicii, the Swedish DJ and producer whose real name is Tim Bergling, remained in a Miami hospital Friday with a blocked gallbladder and could undergo surgery. The 24-year-old was hospitalized Thursday with severe abdominal pains, nausea, and fever and has had to cancel all his activities around the Ultra Music Festival, including his headlining set Saturday night.

Manager Ash Pournouri says in a statement that Bergling was disappointed he had to pull out and “it’s a big letdown not being able to play.”

A news release says Ultra officials wish Bergling a speedy recovery.