View gallery Image Credit: Emma McIntyre/Getty Images for The Recording Academy Celine Dion, the legendary voice behind "My Heart Will Go On," is continuing her battle with Stiff Person Syndrome-a rare and debilitating neurological disorder that has forced her to step back from performing. In May 2023, the 57-year-old singer canceled her Courage world tour due to complications from the illness, calling it a "tremendous disappointment.