Wing Han Tsang

Wing Han Tsang is a New Zealand singer, born in Hong Kong, China.

She appears in only one episode, "Wing", as a wife of Tuong Lu Kim. Trey Parker and Matt Stone had to send an approvement letter to her, to use her songs.

She sang two songs in an episode: "Dancing Queen" and "Fernando", both made by Swedish music group "Abba".

Links
Wing on Wikipedia.