Who really created the Disney Hall Xmas sing-along?

Actor, writer and KCRW personality Harry Shearer takes issue with the L.A. Times' recent depiction of how Disney Hall's popular "Twelve Days of Christmas" pop-up sing-along number came about. David Prather, the current host, says in the Times story that he created the sing-along — in which audience members take part, divided by verse in the song "Twelve Days of Christmas" — in 2006. The story notes that Shearer and his wife, songwriter Judith Owen, were involved a year earlier, before Prather arrived. But Shearer says via email that it was Owen who created the pop-up sing-along, dividing the Disney Hall seats into twelve sections, and that Prather is off base. "The routine...was created by Judith Owen for the first Xmas sing-a-long at Disney Hall, a year before they hired Prather," Shearer says. "Judith has led this event at sing-a-longs in Seattle, SF, LA (the Broad last year), Chicago, NYC, New Orleans, and, this year, London--all for the benefit of the New Orleans Musicians' Clinic & Tipitina's Foundation."