Celine Dion’s spectacular performance at the Eiffel Tower for the Olympics opening ceremony showed that she remains a stunning vocal powerhouse. But something she saw at a recent Trump rally sounded a sour note. “Today, Celine Dion’s management team and her record label Sony Music Entertainment Canada Inc., became aware of the unauthorized usage of the video, recording, musical performance, and likeness of Celine Dion singing ‘My Heart Will Go On’ at a Donald Trump / JD Vance campaign rally in Montana,” reads a statement posted to Dion’s social media accounts. “In no way is this use authorized…