Wikimedia · CC BY 3.0H1-KEY
Four-member girl group known for resilient, melodic pop and a catalog that grew from “Rose Blossom” into the 2026 LOVECHAPTER era.
Profile
H1-KEY debuted on January 5, 2022. The current lineup is SEOI, RIINA, HWISEO and YEL. HWISEO joined in 2022 after former member Sitala left the group.
The group became widely recognized through the 2023 mini album Rose Blossom and its title track of the same name, a song built around perseverance and growth. Later releases including Seoul Dreaming, LOVE or HATE and Lovestruck expanded the group’s sound while keeping strong vocal melodies and band-oriented arrangements at the center.
H1-KEY is currently represented by CHOI CREATIVE LAB. The company’s official artist roster lists all four members, and its 2026 catalog includes the group’s fifth mini album LOVECHAPTER.
On March 5, 2026, H1-KEY released LOVECHAPTER with “To. My First Love” as the title track. In June, the group held its first fan meeting in Japan, THE FIRST KEY, as its Japanese activities continued to expand. On August 22, H1-KEY also released “We’re Happy (행복합니다),” a remake created for the 2026 International Year of Volunteers campaign.
Members
Career Milestones & Group Honors
We’re Happy
H1-KEY released “행복합니다 (We’re Happy),” a campaign remake for the 2026 International Year of Volunteers.
First Japan fan meeting
H1-KEY held THE FIRST KEY at Nikkei Hall in Tokyo.
LOVECHAPTER
The fifth Korean mini album arrived with “To. My First Love.”
Japanese mini-album debut
Lovestruck launched the group’s full-scale Japanese activities and reached No. 3 on Oricon’s daily album ranking.
First music-show win
The Seoul Dreaming era brought H1-KEY its first music-show trophy.
Rose Blossom
The first mini album and its title track became a breakthrough release for the group.
Debut · Athletic Girl
H1-KEY debuted in January and settled into its current four-member lineup later that year when HWISEO joined.
Official Music Videos
Selected group videos, newest first.
We’re Happy
Official music video for the 2026 International Year of Volunteers campaign remake.
The World Isn’t Like a Movie
Official music video for “세상은 영화 같지 않더라.”
Summer Was You
Official KBS WORLD performance of the 2025 summer single.
Rose Blossom
Breakthrough title track from H1-KEY’s first mini album.
Official Social
News & Further Reading
Official artist information and selected coverage of H1-KEY’s international activities.