Leon Ko Sai-tseung (Chinese: 高世章; pinyin: Gāo Shìzhāng) is a composer for musical theatre and films. He won a Richard Rodgers Development Award, a Golden Horse Award and numerous musical awards. His mother, Lucilla You Min (尤敏), was a famous actress in post-war Hong Kong Mandarin cinema and won "Best Actress" at the 1st Annual Golden Horse Awards and two consecutive Asian Film Festivals. His grandfather, Bak Yuk Tong (白玉堂), was a famous Cantonese opera artist, known as one of the Four Super Stars (四大天王).
Ko received a master’s in Musical Theatre Writing at New York University's Tisch School of the Arts. His musical Heading East, with book and lyrics by Robert Lee, won the 2001 Richard Rodgers Development Award and was restaged in New York in 2010 in the form of a concert presentation. His works have been performed at Carnegie Hall, as well as on Public Broadcasting Service (PBS), where he wrote songs for the children series The Puzzle Place.
Ko won Best Score for each of his four Cantonese musicals The Good Person of Szechwan (四川好人), The Legend of the White Snake (白蛇新傳), Field of Dreams (頂頭鎚) and The Passage Beyond (一屋寶貝) in the 2003, 2006, 2009, 2010 and 2012 Hong Kong Drama Awards. For the movie Perhaps Love (如果·愛), he received a Golden Horse Award for Best Original Film Song, a CASH Golden Sail Music Award for Best Alternative Composition as well as a Hong Kong Film Award, an Asia-Pacific Film Festival Award and a Golden Bauhinia Award for Best Film Score. In 2013, he received a Hong Kong Film Award for Best Original Film Song for the movie The Last Tycoon (大上海). He was nominated for a Golden Horse Award and a Hong Kong Film Award in 2008 for the movie The Warlords (投名狀).