I’ve been aware of Celine Dion at least since she sang the theme song (“My Heart Will Go On”) for Titanic in 1997, but I’d probably heard something from her before then. I didn’t follow her at all, however. To me she was just another pop singer, very good on so-called “power ballads,” but I can’t follow everything, can I? Still, every now and then, I’d hear something. When she was diagnosed with still-person syndrome, I heard about that. Then, a week or two ago the trailer for a documentary ...