She is the one who sings the happy song you like---
http://www.sonymusic.com.tw/pop/karen/index.php
Karen Joy Morris, or Karen Mok Man-Wai, or Mò Wénwèi is a Hong Kong-based actress and singer. She is 1/2 Chinese, 1/4 Welsh (paternal grandfather), 1/8 Iranian and 1/8 German.[citation needed] Mok attended Diocesan Girls' School, Hong Kong (from primary to secondary) before attending United World College of the Adriatic near Trieste, Italy, and majored in Italian literature when studying in the University of London. She is the sister of the writer and producer Trevor Morris and the descendant of Alfred Morris, the first principal of King's College, Hong Kong. Mok speaks English, Cantonese, Mandarin, Italian, French.
Mok is often credited as Karen Mok in Chinese movies, but as Karen Joy Morris (her birth name) in Hollywood movies. She supplied the voice of Princess Kida for the Cantonese dub of Disney's Atlantis (2001). Mok performed in the international tour of the hit Broadway musical "RENT" as Mimi during the Hong Kong stops in December 2005.