"If there's one thing that Rene loves just beneath the family, her, their personal life, it's her voice, her ability. It gives him life. For him to say to her, 'I want you to go out there and give that to the people,' that's typical them." Singer Josh Groban on his friend Celine Dion's decision to return to her Las Vegas residency after taking a leave of absence to care for her husband Rene Angelil as he battles cancer.