While he's perhaps best known as an illustrator, Siu Hak is also a highly in-demand songwriter. It's a secondary career which has seen him collaborate with some of Cantopop's biggest names. And Hak's emotional songs have been interpreted by more than 100 artists—enhancing the sparkling pop of Charlene Choi, the dance grooves of Louis Cheung and the soaring orchestral arrangements of Eason Chan.