Bolbbalgan4

3rd Generation April 22, 2016

Bolbbalgan4 (Hangul: 볼빨간 사춘기), also known as BOL4 or Blushing Youth (bolbbalgan sachungi literally means “red-cheeck puberty”) is a South Korean duo formed by Shofar Music in 2016. They appeared on Superstar K6 in 2014 before signing a contract with their current agency. The duo consists of Ahn Ji-young and Woo Ji-yoon. They debuted on April 22, 2016, with the single “Fight Day” from the mini-album Red Ickle. The duo went on a little break due to Ji Young’s music classes requirements in the first half of 2018.

OriginSeoul, South Korea
GenresK-pop, folk rock, Rhythm & Blues, Indie pop
Years active2016–present
LabelsShofar Music
Associated acts 
Websitewww.shofarmusic.com
Past MembersJiyeong
Jiyun

Ji-young (지영)
An Ji-yeoung (안지영)
Vocalist
★ 14.09.1995 (24 years)
Yeongju
@hey_miss_true

Ji-yoon (지윤)
U Ji-yun (우지윤)
Vocalist
★ 06.01.1996 (23 years)
Yeongju
@bssazzzn