Bolbbalgan4

BOL4 (), also known as Bolbbalgan4 or , is a South Korean musical act formed by Shofar Music in 2016. They appeared on Superstar K6 in 2014 before signing a contract with their current agency. BOL4 was originally a duo consisting of Ahn Ji-young and Woo Ji-yoon. They debuted with the single "Fight Day" from the mini-album Red Ickle on April 22, 2016.

Key facts

Musical artist.name: BOL4
Musical artist.image: Ahn Ji-young in November 2025.png
Musical artist.caption: BOL4 in November 2025
Musical artist.alias: Bolbbalgan4Blushing Youth
Musical artist.origin: Yeongju, Gyeongsang, South Korea
Musical artist.years_active: 2016–present
Musical artist.current_members: Ahn Ji-young
Musical artist.past_members: Woo Ji-yoon

via Wikipedia infobox

Article

34 sections

Contents

Name
Formation
Members
Current
Former
Discography
Studio albums
Extended plays
Singles
As lead artist
Collaborations
As featured artist
Soundtrack appearances
Other charted songs
Concert and tours
Headlining concerts and tours
BOL4 1st Solo Concert "Red Planet" (2016)
BOL4 1st Concert in Taipei (2017)
BOL4 2nd Solo Concert "Imagine" (2017-2018)
BOL4 3rd Solo Concert "Travel" (2018)
2019 BOL4 Asia Tour "Blossom"
2019 BOL4 Tour Concert "Two Five"
BOL4 {{small|({{lang|ja|赤頬思春期}})}} Live Tour 2020 "Love"
BOL4 Concert "Seoul" (2022)
2023 BOL4 Asia Tour "Love.zip"
Showcase
Videography
Music videos
Filmography
Television shows
Awards and nominations
Notes
References
External links

The duo went on a temporary hiatus due to Ahn's music classes requirements in the first half of 2018. BOL4 signed with King Records and debuted in Japan on June 5, 2019, with the mini-album Red Planet (Japan Edition).