London, Apr 11 : Rapper Eminem is all set to headline Nelson Mandela's 90th birthday celebrations in London this summer, it has emerged.

The star is alleged to be making his musical comeback at the charity concert at the capital's Hyde Park on June 27 in celebration of the former president of South Africa, after spending four days in hospital in December, 2007 suffering from heart problems arising from a bout of pneumonia.

"We're amazed to have Eminem on board. We wanted some of the greatest artists from recent times and Eminem was on the list," The Sun quoted a source, as saying.

"It's going to be explosive stuff and it's certainly a big stage to make his comeback," the source added.

ANI