Janet Jackson and rappers 50 Cent and Future have been added to the lineup for the Jeddah World Fest.
The website for the event posted photos of Jackson, 50 Cent and Future alongside previously announced performers Liam Payne and Steve Aoki.
The concert takes place on Thursday at the King Abdullah Sports Stadium.
The Human Rights Foundation and other organisations have asked artists not to perform in Saudi Arabia, where gender segregation between single men and women is enforced in many restaurants, coffee shops, public schools and universities.
The UN, meanwhile, has accused the Saudi dictatorship of creating the world’s worst humanitarian crisis in Yemen. The regime’s links to terrorism, particularly in Syria, have also attracted criticism.
Since you're here ...
We know you don't need a lecture. You wouldn't be here if you didn't care.
Now, more than ever, we need your help to challenge the rightwing press and hold power to account. Please help us survive and thrive.