The four acts were added to the bill 24 hours before the event, a week after pressure from human rights activists prompted Nicki Minaj to pull out of the festival.
The protesters, who were calling for all artists to boycott the event following the murder of Washington Post journalist Jamal Khashoggi, also asked DJ Steve Aoki and Liam Payne to cancel their sets, but the pop pair went ahead with performances.
Minaj told fans she researched the nation's human rights abuses after being targeted by The Human Rights Foundation bosses and decided not to play.
"While I want nothing more than to bring my show to fans in Saudi Arabia, after better educating myself on the issues, I believe it is important for me to make clear my support for the rights of women, the LGBTQ community and freedom of expression," she said.
The Human Rights Foundation president Thor Halvorssen heaped praise on Minaj for her "inspiring and thoughtful decision to reject the Saudi regime's transparent attempt at using her for a public relations stunt."