ArtistChoi Creative Lab
Hwiseo
Jo Hwi-hyeon (조휘현), known by her stage name Hwiseo (휘서), is the main vocalist and rapper of H1-KEY and a member of Mnet project group EL7Z UP. Born July 31, 2002 in Seoul, she began training at the age of nine and spent over nine years developing her craft across FNC Entertainment, The Black Label (2018-2020), and Source Music (2021).
She officially joined H1-KEY on June 13, 2022, replacing a departed member and bringing her signature blend of technical vocal skill and stage charisma to the group. Her defining competitive moment arrived in 2023 on Queendom Puzzle, the Mnet survival show assembling a project group from contestants across multiple girl groups. Hwiseo placed first overall with 444,495 votes, earning her spot in the debut lineup of EL7Z UP, which released the mini album GLASSY in October 2023.
Under H1-KEY, Hwiseo has built a reputation as one of K-pop's most consistent live vocalists. The group moved to boutique agency Choi Creative Lab in August 2025, releasing anniversary digital single Not Like a Movie in January 2026 and their fifth EP LOVECHAPTER on March 5, 2026. She graduated from Hanlim Multi Arts School's Practical Dance Department in 2021 and has expressed ambitions to write and produce music.
1 articles7 creditsKorean
Gallery
H1-KEY at Seoul Fashion Week, February 2026 (CC BY 4.0 via YouTube)
Discography
2026
LOVECHAPTERMini Album
Main Vocalist
2025
G.O.A.TSingle
Main Vocalist, Rapper
2024
LOVE or HATEEP
Main Vocalist, Rapper
2023
EL7Z UP - GLASSYEP
Main Vocalist, Rapper
2023
Time to ShineSingle
Main Vocalist, Rapper
2022
Rose BlossomEP
Main Vocalist, Rapper
2022
RUNSingle
Main Vocalist, Rapper
Fans Also Ask
What is Hwiseo's real name?
Hwiseo's real name is Jo Hwi-hyeon (조휘현). She was born on July 31, 2002, in Seoul, South Korea, and is 169 cm tall with blood type A. She began training at age nine and spent over nine years developing her craft before her H1-KEY debut.
When did Hwiseo join H1-KEY?
Hwiseo officially debuted with H1-KEY on July 6, 2022, with the group's maxi single RUN. She was revealed as a new member on June 14, 2022, replacing a departed member and taking on main vocalist and rapper responsibilities.
How did Hwiseo place on Queendom Puzzle?
Hwiseo placed first overall on Mnet's Queendom Puzzle in 2023, earning 444,495 votes from viewers across the show. Her ranking secured her spot in EL7Z UP, the project group assembled from the show's top contestants, which debuted with the EP GLASSY in October 2023.
What agencies has Hwiseo been under?
Hwiseo's training history spans FNC Entertainment, The Black Label (2018-2020), and Source Music (2021) before joining GLG in 2022 for her H1-KEY debut. She moved with H1-KEY to boutique label Choi Creative Lab in August 2025, where she remains active.
What has H1-KEY released most recently?
H1-KEY released their fifth EP LOVECHAPTER on March 5, 2026, preceded by the anniversary digital single Not Like a Movie in January 2026. Both came under Choi Creative Lab, the boutique agency H1-KEY moved to in August 2025 following their departure from GLG.
