HI SUHYUN (Hangul: 하이수현) is a sub unit consisting of YG artists Lee Ha Yi and Akdong Musician's Lee Soohyun. The unit's name is a combination of both of their names. The unit was announced in October 2014 and their debut single "나는 달라 (feat. BOBBY)" featuring iKON's Bobby was released on November 11, 2014.

Song lyric I'm Different (Feat. BOBBY) I'M DIFFERENT (FEAT. BOBBY) HI SUHYUN
Song lyric 나는 달라 I'm Different 나는 달라 I'M DIFFERENT HI SUHYUN