BOL4

Promotional photo for "Bloom"

Names

Also as

Bolbbalgan4
Bolbbalgan Sachungi
Red Cheek Puberty
赤頬思春期
臉紅的思春期

Hangul

볼빨간사춘기

Background

Origin

Seoul, South Korea

Genre(s)

Indie pop, ballad, folk, blues, acoustic, rock

Debut

April 22, 2016 (South Korea)
June 5, 2019 (Japan)

Years active

2014–present

Label(s)

Shofar Entertainment (South Korea; 2015–2025)^[1]^[2]
King Records (Japan; 2019–present)

Associations

Superstar K6

Members

Current

An Ji Yeong

Former

Woo Ji Yun

Fandom

Name

LoBoly (러볼리)

Website
KR: Website JP: Website

SNS
KR: JP:

BOL4 (also known as Bolbbalgan4 (볼빨간사춘기)) is a South Korean one-member act. They debuted as a duo on April 22, 2016, with their first mini-album Red Ickle.

On April 2, 2020, Shofar Entertainment announced that Woo Ji Yun departed from BOL4, and An Ji Yeong would continue to promote under the duo's name, without any additional members.^[3]

History[]

2014–2015: Pre-debut, Superstar K6, Shofar Music[]

An Ji Yeong and Woo Ji Yun became friends in high school in Yeonju, Gyeongsangbuk-do. They started a three-member band together with their friend Kwon Ji Won to participate in school music festivals and talent shows. An Ji Yeong was the vocalist, Woo Ji Yun played the bass guitar, and Kwon Ji Won played the acoustic guitar.^[4]^[5]

In 2014, they auditioned for the Mnet survival show Superstar K6 and had a temporary percussionist perform with them during the show. They were eliminated before the top 11 was selected, but they were invited back to do a special performance during the Super Awards ceremony in the semi-final episode on November 14, 2014.^[4]^[6]^[7]^[8]^[9]^[10]

On April 21, 2015, Shofar Music announced that BOL4 signed with the agency in January.^[11]

On May 29, 2015, Shofar Music released an audition notice to find another female guitarist to join BOL4 after Kwon Ji Won decided to leave to focus on her university studies. They eventually decided to have Woo Ji Yun switch from playing the bass guitar to the acoustic guitar and continued as a duo instead.^[12]^[4]

2016: Debut, Red Ickle, Red Planet[]

On April 22, 2016, BOL4 released their debut mini album Red Ickle.

On August 29, 2016, they released their first full-length album Red Planet. The title track "Galaxy" reached rank 1 on the Melon chart on September 26, 2016.^[13]

Members[]

Name	Position(s)	Year(s) active
An Ji Yeong (안지영)	Main Vocalist	2014–present
Former
Woo Ji Yun (우지윤)	Guitarist, Rapper, Backing Vocalist	2014–2020
Pre-debut
Kwon Ji Won (권지원)	Guitarist	2014-2015

Discography[]

Korean[]

Studio albums[]

Red Planet (2016)

Mini albums[]

Red Ickle (2016)
Red Diary Page.1 (2017)
Red Diary Page.2 (2018)
Puberty Book Ⅰ Bom (2019)
Two Five (2019)
Puberty Book ⅠⅠ Pum (2020)
Seoul (2022)
Love.zip (2023)
Merry Go Round (2023)

Single albums[]

"Filmlet" (2020)

OSTs[]

"Misaeng OST Part.4" ("The Covered Up Road", "The Covered Up Road (Band Version)") (2014)
"Hwarang OST Part 3" ("Dream") (2016)
"Lost Tale OST" ("Hello") (2016)^[14]
"The Emperor: Owner of the Mask OST Part.2" ("From The Beginning You And I") (2017)
"Reverse D OST" ("First", "달빛의노래") (2017)^[15]^[16]
"Why: The Real Reason You Got Dumped OST Part.1" ("My Trouble") (2018)
"Elsword OST" ("Nisha Labyrinth" with ASTERIA) (2018)^[17]^[18]
"Start-Up OST Part.12" ("Love Letter") (2020)

Participation releases[]

"Psycho, Loveholic [The Seasons: Red Carpet With Lee Hyori]" ("Psycho") (2024)

Other releases[]

"Tromm Styler Song" (with LG) (2019)^[19]^[20]

Japanese[]

Mini albums[]

Red Planet (Japan Edition) (2019)

Singles[]

"Love" (2020)

Digital singles[]

"To My Youth (JP Ver.) / Some (JP Ver.)" (2019)
"Bom (JP Ver.) / Stars Over Me" (2020)

Concerts[]

2022 BOL4 Concert 'Seoul' (2022)
2022 BOL4 Concert 'Seoul' After Party (2022)
2023 BOL4 Concert 'Love.zip' (2023)

Filmography[]

Reality shows[]

Superstar K6 (Mnet, 2014) - contestant^[6]^[7]^[8]

Variety shows[]

You Heeyeol's Sketchbook (KBS2, 2016–2019) - guest^[21]
Cultural Concert Nanjang (Gwangju MBC, 2016) - guest^[22]
Kim Je Dong's Talk to You (JTBC, 2016) - guest (ep. 79)^[23]
Live One (1theK, 2016–2019) - guest^[24]^[25]^[26]^[27]
All That Music (KBS, 2017) - guest^[28]
31st Golden Disc Awards (JTBC, 2017) - guest^[29]
My Little Television (MBC, 2017) - guest (eps. 84–85)^[30]^[31]
Weekly Idol (MBC, 2017–2018) - guest (eps. 290, 360)^[32]
Space Sympathy (EBS, 2017–2018) - guest (eps. 1305, 1390)^[33]^[34]
I'm Live (Arirang, 2017–2019) - guest (eps. 6, 124)^[35]^[36]
2017 Mnet Asian Music Awards (Mnet, 2017) - guest^[37]
Picnic Live Season 2 (MBC, 2018) - guest (ep. 112)^[38]
Happy Together (KBS2, 2018) - guest (ep. 520)^[39]
32nd Golden Disc Awards (JTBC, 2018) - guest^[40]
하와유.mov (JTBC, 2018) - guest (ep. 2)^[41]^[42]
33rd Golden Disc Awards (JTBC, 2019) - guest^[43]
Amazing Saturday (tvN, 2019) - guest (ep. 52)^[44]
I Can See Your Voice 6 (Mnet & tvN, 2019) - guest (ep. 12)^[45]
Idol Room (JTBC, 2019) - guest (ep. 45)^[46]^[47]
School of Rock (M2, 2019) - guest^[48]

Awards and nominations[]

Asia Artists Awards[]

Year	Nominee/Work	Category	Result
2017	Bolbbalgan4	Best Entertainer Award (Music Category)	Won

Korean Music Awards[]

Year	Nominee/Work	Category	Result
2017	"Galaxy (우주를 줄게)"	Song of the Year	Won

Gaon Chart Music Awards[]

Year	Nominee/Work	Category	Result
2017	Bolbbalgan4	Indie Discovery of the Year	Won
2017	"Travel (여행)"	Song of the Year – May	Won

Golden Disc Awards[]

Year	Nominee/Work	Category	Result
2017	Bolbbalgan4	New Artist of the Year	Won
2018	"Tell Me You Love Me (좋다고 말해)"	Digital Bonsang	Won

Melon Music Awards[]

Year	Nominee/Work	Category	Result
2016	"Galaxy (우주를 줄게)"	Best Indie	Won
2017	Bolbbalgan4	Top 10 Artists	Won
2018	Bolbbalgan4	Top 10 Artists	Won
2020	"Leo (나비와 고양이)"	Best Indie	Won

Mnet Asian Music Awards[]

Year	Nominee/Work	Category	Result
2017	"Tell Me You Love Me (좋다고 말해)"	Best Vocal Performance – Group	Won

Seoul Music Awards[]

Year	Nominee/Work	Category	Result
2018	Bolbbalgan4	Bonsang Award	Won

Soribada Best K-Music Awards[]

Year	Nominee/Work	Category	Result
2018	Bolbbalgan4	Bonsang Award	Won

Gallery[]

Main article: BOL4/Gallery

References[]

Official links[]

Korean

Japanese

[1] (KR) Shofar Music: 쇼파르뮤직 볼빨간 사춘기, 스무살 영입 소식

[2] @shofar_ent on Instagram (March 31, 2025)

[3] Soompi: BOL4 Announces Woo Ji Yoon’s Departure From Duo

[Hankookilbo-4] 4.0 ^4.1 ^4.2 (KR) Hankookilbo: “잊혀질까 두려웠다”는 볼빨간사춘기

[BNT-5] (KR) BNT: [인터뷰] 볼빨간사춘기 “상업적 곡보단 솔직한 감성 담긴 음악 만들고 싶다”

[SK6-1-6] 6.0 ^6.1 YouTube: Mnet [슈퍼스타K6] Ep.04 : 임도혁 - 요즘 바쁜가봐, 볼빨간 사춘기 - 남자 없이 잘 살아

[SK6-2-7] 7.0 ^7.1 YouTube: [티비냥] 3번의 슈스케 탈락이 오히려 신의 한수? 통편당한 4인조 볼빨간사춘기 대공개, 오디션 탈락자들의 반란 | 명단공개 171115 #03

[SK6-3-8] 8.0 ^8.1 YouTube: Mnet [슈퍼스타K6] 준결승전에서 '볼빨간 사춘기' 라이브 무대를 만나세요!

[9] (KR) Newsen: ‘슈스케6’ 생방송진출 톱11 확정, 본게임 막올랐다

[10] (KR) TV Daily: '슈퍼스타K6' 볼빨간 사춘기 '아차상'·재스퍼조 '비주얼상' 수상

[11] (KR) Shofar Music: 쇼파르뮤직 볼빨간 사춘기, 스무살 영입 소식

[12] (KR) Shofar Music: 볼빨간 사춘기와 함께 할 여성 기타리스트를 모집합니다

[13] (KR) Herald Corporation: [볼빨간 사춘기①] “멜론 1위, 실감 안나… 꿈? 월드컵경기장 콘서트 (부끄)”(인터뷰)

[14] YouTube: [로스트테일] 볼빨간사춘기 게임OST "Hello" M/V 공개!

[15] YouTube: [리버스D] 공식 OST 볼빨간사춘기 - first

[16] YouTube: [리버스D] 공식 OST 볼빨간사춘기 - 달빛의노래

[17] YouTube: ASTERIA - '밤의 미궁 (Feat. 볼빨간사춘기 (BOL4))' MV｜엘소드 - 라비 테마곡

[18] Nexon Elsword: ASTERIA feat. BOL4 "Nisha Labyrinth" Official Free MP3 Download

[19] YouTube: LG TROMM 스타일러 - 스타일러, 여름옷을 구해줘! (feat. 볼빨간사춘기)(Full) 편

[20] LG Electronics: BOL4 X LG "Tromm Styler Song" Official Free MP3 Download

[21] YouTube: 음색여왕 볼빨간 사춘기💗의 유스케 스페셜📀 유희열의 스케치북 몰아보기🎟 | #유플리 | 유희열의 스케치북 [KBS 방송]

[22] YouTube: 볼빨간사춘기 ; payphone + What makes you beautiful_리얼뮤직 난장

[23] YouTube: [DJ티비씨] 음원깡패 볼빨간사춘기♡ 당 과다섭취한 음색♬ #김제동의 톡투유 #JTBC봐야지

[24] YouTube: Live ONE(라이브원): Full Ver. Bolppalgan Puberty(볼빨간사춘기)_Come Back with Warm Flutters in the Heart_좋다고말해

[25] YouTube: Live ONE(라이브원): Full ver. Bolbbalgan4(볼빨간사춘기) _ Some(썸 탈꺼야)

[26] YouTube: LiveONE(라이브원): Full ver. BOL4(볼빨간사춘기) _ Travel(여행)

[27] YouTube: LiveONE(라이브원): Full ver. BOL4(볼빨간사춘기) _ Bom(나만, 봄)

[28] YouTube: 볼빨간 사춘기 - You (=I) [ 올댓뮤직 All That Music ]

[29] YouTube: [2017 골든디스크] 디지털음원부문 신인상 볼빨간사춘기 '우주를 줄게'

[30] YouTube: [마리텔1] 실친 케미 폭발 🔮우처님과 깡총2🔮의 고막 힐링 방송

[31] YouTube: [마리텔1] 귀호강하러 왔다가 성대모사 퍼가요~♡ 종잡을 수 없는 볼빨간 사춘기😊 방송

[32] YouTube Search: "Weekly Idol" "볼빨간사춘기"

[33] EBS: 1305회 - 두근대는 우주를 줄게 볼빨간 사춘기

[34] EBS: 1390회 - 페이지를 넘기며 - 소히 X 볼빨간사춘기

[35] YouTube: [I'm LIVE] Ep.6 - Bolbbalgan4 / Kim Ji-soo (볼빨간사춘기 / 김지수) _ Full Episode

[36] YouTube: [I'm LIVE] Ep.124 - BOL4 (볼빨간 사춘기) _ Full Episode

[37] YouTube: [2017 MAMA in Hong Kong] Heize/Bolbbalgan4_Don't know you/Some

[38] YouTube: 심장이 막 두근대고 잠은 잘 수가 없어요💕 볼빨간사춘기 플레이리스트♬ l 볼빨간사춘기(BOL4) l #피크닉ZIP l #피크닉라이브소풍

[39] YouTube: Bolbbalgan4 can't hide nervousness on first appearance! [Happy Together/2018.01.11]

[40] YouTube: [제32회 골든디스크 볼빨간사춘기 '좋다고 말해 & Blue'♪

[41] YouTube: 볼빨간 사춘기 - 우주를 줄게 (third Music Video) ㅣ뮤비 패러디ㅣ 하와유.MOV ep2-3. 가사대로 뮤비

[42] YouTube: 신곡으로 돌아온 볼빨간 사춘기★ 안지영 발음 논란? ㅣ뮤비 리액션ㅣ하와유.MOV ep2-2.하세큐

[43] YouTube: [제33회 골든디스크] 볼빨간사춘기 ′나의 사춘기에게 + 여행′♪

[44] YouTube: amazingsaturday [예고] 새로운 왕좌의 게임이 시작된다! 190330 EP.52

[45] YouTube: [ENG sub] I can see your voice 6 [선공개] 너목보 첫.출.연 볼빨간 사춘기가 봄과 함께 왔다네 ♪ 오늘 밤 7시30분 본방사수 190405 EP.12

[46] YouTube: 볼빨간 사춘기(BOL4) ′나만, 봄′ 라이브♡ 올해부터 봄 캐럴 각 아이돌룸(idolroom) 45회

[47] Facebook: [아이돌룸] Love yourself (무자막 볼빨간헨리ver.)

[48] YouTube: [스쿨오브락] 볼빨간사춘기(BOL4) @경북영주여자고등학교

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BOL4

History[]

2014–2015: Pre-debut, Superstar K6, Shofar Music[]

2016: Debut, Red Ickle, Red Planet[]

Members[]

Discography[]

Korean[]

Studio albums[]

Mini albums[]

Single albums[]

Digital singles[]

Collaborations[]

Features[]

OSTs[]

Participation releases[]

Other releases[]

Japanese[]

Mini albums[]

Singles[]

Digital singles[]

Concerts[]

Filmography[]

Reality shows[]

Variety shows[]

Awards and nominations[]

Asia Artists Awards[]

Korean Music Awards[]

Gaon Chart Music Awards[]

Golden Disc Awards[]

Melon Music Awards[]

Mnet Asian Music Awards[]

Seoul Music Awards[]

Soribada Best K-Music Awards[]

Gallery[]

References[]

Official links[]