In the mood for some over-the-top emotion? Try this. Kate McGarrigle was dying, and she knew it. But she loved Christmas and the family holiday concerts that raised money for cancer research, so she willed herself on stage at the Royal Albert Hall in London for the 2009 benefit. Flanked by her son Rufus and her very pregnant daughter Martha, she sang a song she'd written for them --- the last song she'd ever write. "We all knew it would be her last concert," Martha has said.