Since 1972 Byrne has been a regular performer at the Christmas Eve "Carols by Candlelight" concert at Melbourne's Sidney Myer Music Bowl. At the 2005 concert she performed a duet of "Silent Night" with her five-year-old daughter, Lucille, who was making her professional stage and television debut. In late 2006 her autobiography, "Not Quite Ripe: A Memoir", was published on Pan Macmillan. She described how the book took her four years to write, "On and off. I wrote and I didn't write." Byrne reprised her role of Grizabella in the "ExitLeft" production of "Cats", which was staged at the Derwent Entertainment Centre in Hobart in late-October 2007.