 Complete the following phrase:  Tan often contributes to cultural activities and sporting events around the world. She performed during the closing ceremonies of the 15th Asian Games in Doha 2006. and the 2007 Special Olympics World Summer Games in Shanghai. As a spokesperson for the 2008 Olympic Games in Beijing she took part in the Olympic activities from beginning to end as a singer, torchbearer, and volunteer. Her song, Sky, was played during the releasing of the doves during the opening ceremony of the Olympic Games and she gave live performances during the 