公主太子 is a very good song, it was a candiate for my favorite list. I didn't choose that one because I want to talk about 非情歌. Another interesting thing about 公主太子, besides the boy voice is the names, the song is full of hk landmarks. 公主太子 is basically 公主道 and 太子道, two major streets in HK island and Kowloon.