Lee Ha Yi (Hangul: 이하이, born September 23, 1996), better known by her stage name Lee Hi, is a South Korean singer managed by YG Entertainment . She is known as the SBS's "Survival K-Pop Star" runner-up of 2011. Her debut single "1,2,3,4", was released in on October 28, 2012 and reached #1 with the first-week sales of 667,549 downloads.