H1-KEY to Release New Single “Unbelievable” on Nov. 13, Teasing an Unpredictable Transformation

Girl group H1-KEY is pursuing a musical transformation with the release of its new digital single “Unbelievable.”

H1-KEY, consisting of Seoi, Riina, Hwiseo and Yel, will kick off the countdown to its comeback with the release of “Unbelievable” on various online music platforms at 6 p.m. on Nov. 13. The new single marks the group’s first release in about eight months, following its fifth mini-album, “LOVECHAPTER,” released in March.

H1-KEY has earned widespread love for its distinctive storytelling and messages about youth in songs including “To. My First Love,” “Rose Blossom,” “It Was Summer,” “The World Wasn’t Like a Movie” and “Let It Burn.” Fans are eager to see what unpredictable transformation and relatable message the group will deliver in a song whose title, “Unbelievable,” is both direct and striking.

H1-KEY debuted under GLG Entertainment in 2022 and went on to write a success story for a small agency. Since moving to Choi Creative Lab in early 2025, the group has continued to show strong teamwork and chemistry. After eight months of recharging and growth, H1-KEY will showcase a broader musical range with “Unbelievable,” which will be released worldwide simultaneously at 6 p.m. on Nov. 13.