Bolbbalgan4 is a South Korean duo formed by Shofar Music and debuted on April 22, 2016. The duo consists of Ahn Ji Young and Woo Ji Yoon. On September 28, 2017, Bolbbalgan4 comebacks with their new album "Red Diary, Page 1" that compose of 6 songs including their double tracks entitled "I'm Going To Have Some" and "To My Puberty". The duo made a perfrct kill on Korean Music Charts as soon as they released their music video. As of now, the duo are promoting their album in different Music Shows in Korea. Check out their new release and give them a warm support.