Celine Dion nearly passed on singing "My Heart Will Go On." In a new interview, Dion admits that at first, she wanted no part of the now-famous theme to James Cameron's movie, "Titanic." The 51-year-old added she was convinced by her late husband Rene Angelil. Dion also explained that a demo she made became the official song. In 2016, Dion dedicated "My Heart Will Go On" to Angelil, who died that year of cancer.