The Chicago hip-hop artist will be joined by Serena Ryder of Millbrook, Ont., and Miami pop-rapper Pitbull for the ceremony, to be held at Toronto's Rogers Centre.
Although organizers have been secretive about plans for the ceremony, they allowed a few details at a news conference on Friday.
The show will feature 500 costumes made from 3,000 yards of fabric, 510 volunteers making up the show's cast, 150 broadcast cameras and 300 lights.
As of Friday, organizers said a "couple thousand" tickets remained available, although the opening ceremony in the same venue drew a sold-out crowd of roughly 45,000.
Ryder will sing the Pan Am Games' official song "Together We Are One," reflecting the show's theme, which TO2015 organizing committee CEO Saad Rafi said was "unity through diversity."
He also promised that the show would close with a "huge, captivating" fireworks show that would be even bigger than what audiences saw at the opening.
Each of the three featured artists is expected to play a few songs. The ceremony will also feature the parade of nations (less formal than in the opening) and the handover to Lima, Peru, which will hold the next Pan Am Games in 2019.
Rafi stressed Friday that the show's featured musical guests, though they merited most of the headlines, are only part of the show.
"It's really important to be clear that the closing ceremonies are for the athletes — for the spectators and the audience (too) but traditionally it's to celebrate the athletes and their performance," he said.
"It's not their concert," he added later. "It's the closing ceremonies and they're performing in it — all three of them, I might add."
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