H1-KEY (하이키) is a four-member girl group formed by GLG and Sony Music. The group consists of talented members Seoi, Riina, Hwiseo, and Yel. Hwiseo joined the group after Sitala left in May 2022.

H1-KEY made their debut on January 5, 2022, with the single album Athletic Girl, marking their entrance into the K-pop scene. Their music is known for its energetic and refreshing sound, paired with strong performances and vibrant concepts that resonate with fans. Despite being a relatively new group, H1-KEY has quickly established themselves with their distinct style and potential for future growth in the industry.