When did the group debut that Kang Sung-hoon is a part of?
Kang Sung-hoon (singer) Kang Sung-hoon (hangul:강성훈, born February 22, 1980) is a South Korean singer from the 90's South Korean boy group Sechs Kies. Sung-hoon is the main vocalist of SechsKies and is referred to having the best singing voice of the group. After Sechskies had disbanded in 2000, Sung-hoon pursued a solo singing career, signed under Laful Entertainment at the time. His nickname Hoony is the title for his third album and his official fan club is called Hoony World.
Gavy NJ Gavy NJ (Korean: 가비앤제이) is a South Korean pop ballad female trio that debuted in 2005. The trio currently composed of Jenny, Gunji and Seorin. Member Hyemin official departed from the group in 2009 while Heeyoung in 2011, Misty in 2012 and Sihyun in 2016.