Lyrics for this song have yet to be released
그때 그날 우리 (Back in the day) [Instrumental] was written by HowL (하울) (KOR) & 박근철 (Park Geun Chul) & 정수민 (Jeong Soo Min) (SSMusic).
YEL (옐) released 그때 그날 우리 (Back in the day) [Instrumental] on Thu Feb 02 2017.