Heo Young Saeng was born on November 3, 1986 and became the main/lead vocals for the boyband SS501. His nickname Prince was given to him by his fans and by his fellow members for having a prince like face. A better name would be “A Pretty Boy”. While Kim Hyun Joong and Park Jung Min were away with work on dramas, Saeng was named the leader of the SS501 Project Group, which came out with a mini album called U R Man.

Young Saeng also started work on his solo career and has released two Korean mini albums titled Let it Go and Solo. In Let it Go, the third track Rainy Heart, featured Kim Kyu Jong, who is another member of SS501. In his next album Solo, it contained 5 tracks. It released in May 2012.

On September 19, 2012, he also released a Japanese album titled Over Joyed. This album contained eleven tracks, with tracks from his first 2 albums, just in Japanese. He is currently in Japan along with Park Jung Min and Kim Hyun  Joong, working on promoting his Japanese album.