V.O.S (band)

V.O.S (Hangul: 브이오에스; an acronym for Voice of Soul) is a South Korean R&B boy band formed in 2004. The group is composed of three members: Choi Hyun-joon, Kim Kyung-rok and Park Ji-heon. Park Ji-heon departed from the group in 2010, but returned in 2015 when the group signed with Happy Face Entertainment.