Sweet Sorrow(스윗소로우) is a South Korean cappella pop group formed in 2002. Its members, Hojin In(인호진), Woojin Song(송우진), Youngwoo Kim(김영우) and Jinhwan Sung(성진환), were originally choir members of the "Glee Club" at Yeonse University in Korea. Releasing its first album Sweet Sorrow in 2005, their sweet voices moved the hearts of female fans with hits such as "No Matter How I Think about You" and "Ticklishly."
