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.
SF9 (band) SF9 (Korean: 에스에프나인 ; shortened from Sensational Feeling 9) is a South Korean boy group formed by FNC Entertainment. SF9 is the company's first dance boy group to ever debut. SF9 debuted on October 5, 2016 with the release of their first single album "Feeling Sensation".