4minute/4MINUTE/4Minute/포미닛 is a South Korean girl group, that debuted in in June 2009 with its first single, Hot Issue, and in December 2010, it released its first Japanese album, Diamond. The members are: Heo Ga-yoon (허가윤), HyunA (현아), Nam Ji-hyun (남지현), Jeon Ji-Yoon (전지윤), and Kwon So-hyun (권소현). The group also has two sub-units: Trouble Maker (composed of their rapper, HyunA, and B2ST's main dancer Hyun-seung (현승)); and 2YOON (composed of Ga-yoon and Ji-yoon).
