067, also known as Kong Yoojin (공유진), and formerly known as Buddy (버디) and Kongyoo (콩유) is a South Korean singer and vocal coach under 909trillion. She is the vocalist of the band GULP and a member of the artist-team X909. She is also a former member of the girl group BONUSbaby and the independent band AiDEN.
She made her solo debut under the stage name, Buddy on September 16, 2023 with the digital single "깜빡이".
Career[]
2017–2018: BONUSbaby[]
She debuted as a member of BONUSbaby on January 1, 2017 with the group's first single "Urikiri".
On September 9, 2018, it was announced that Kongyoo would be leaving the group to focus on her studies.[2]
2019–2023: Music teaching, AiDEN and solo debut[]
In a 2019 interview with The Korea Times, Kongyoo, now known as Kong Yoojin, revealed the reasons for her departure from BONUSbaby. While she did not directly address the issue, she described her time under the company as painful, mentioning that she suffered from vocal cord damage and cervical disk pain due to the company's demands. She also noted that she was graduating from university and expressed a desire to become a music teacher and vocal coach.[3]
After graduating in 2021, she began working as a vocal coach.
Sometime in 2022, she was introduced as the vocalist of the independent band AiDEN.[4]
On September 16, 2023, she debuted as a soloist under the stage name Buddy with her first digital single "깜빡이".[5][6]
2024–present: Name changes, GULP, X909 and Sing Again 4[]
On April 14, 2024, she released her second digital single, "Shine in the Empty Mind", this time under the stage name 067.
On December 7, 2024, she was introduced as the vocalist of the South Korean band GULP, this time performing under her real name, Kong Yoojin.[7]
In September 2025, she joined X909, an artist collective formed by musicians under her label, 909trillion, performing under her stage name 067.[8]
On October 1, she was identified as one of the contestants on the singing survival show Sing Again 4.
On December 16, in the 10th episode, she was eliminated and finished in the top 16.[9]
Discography[]
Digital singles[]
- "깜빡이" (2023)
- "Shine in the Empty Mind" (2024)
- "Christmas Coffee" (2025)
Filmography[]
Reality shows[]
- Sing Again 4 (JTBC, 2025) - contestant (eps. 1–10) (as SingAgain4 Singer No.17)
Gallery[]
(BONUSbaby)
.png "BONUSbaby Kongyoo If I Become An Adult promotional photo (3).png (848 KB)")
.png "BONUSbaby Kongyoo If I Become An Adult promotional photo (2).png (415 KB)")
(AiDEN)
References[]
- ↑ WHY I quit living as a K-pop idol: Ex-girl group member talks about the dark side of K-pop
- ↑ Soompi: BONUSbaby Temporarily Halts Group Activities + Kongyoo Leaves Group
- ↑ YouTube: WHY I quit living as a K-pop idol: Ex-girl group member talks about the dark side of K-pop
- ↑ (KR) AiDEN Bugs album information
- ↑ YouTube: [MV] 버디 - 깜빡이 (feat. 공유진)
- ↑ @sloove__ on Instagram (September 16, 2023)
- ↑ @gulp_band.official on Instagram (December 7, 2024)
- ↑ @x909.official on Instagram (September 25, 2025)
- ↑ YouTube: [싱어게인4 미공개] 무대 위 빛났던 순간을 기억하며 〈싱어게인4〉 '4라운드 탈락자 이름 공개' | 싱어게인4
Official links[]
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