Cellist Yo Yo Ma and street dancer Charles Riley, aka Lil' Buck, perform Camille Saint-Saens' "The Swan" at China's National Center for the Performing Arts in Beijing on November 18, part of the U.S.-China Forum on the Arts and Culture. via www.wsj.com/video/yo-yo-ma-and-lil-buck-do-the-swan-in-beijing/3C0B4FFB-7145-45B7-B053-0C0D4D60AECE.html, 10/15/2014 7:20AM