SE7EN (Korean: 세븐, born Choi Dong-Wook, 최동욱, Hanja: 崔東昱, November 9, 1984) is an electropop and R&B singer from Seoul, South Korea. Se7en began training under a management agency YG Entertainment at the age of 15. After 4 years of training in voice and dance, Se7en made his debut in 2003 and became successful throughout Asia. His impressive vocal range, smooth dance moves, and his refusal to lip-sync during live performances has earned him accolades in the music industry as well as heartthrob status.