AtHeart are a new Korean girl group, and ‘3!4!’ is their latest song, released with an official music video on 19 August 2026 KST. The video went up on the group’s own channel rather than a distributor’s, and the rights line reads simply AtHeart.

Korean has two sets of numbers

Digits in a Korean title are ambiguous in a way they are not in English. Korean runs two counting systems side by side: the native one — 하나, 둘, 셋, 넷 (hana, dul, set, net) — and the Sino-Korean one borrowed from Chinese, 일, 이, 삼, 사 (il, i, sam, sa). Which set you reach for depends on what is being counted. Native numbers take objects, people and hours; Sino-Korean numbers take dates, money, minutes, floors and phone numbers. A written 3 or 4 gives no clue which is meant, so a Korean reader supplies it from context — and counting something off out loud is native-number territory.

About this release

The music video was published on 19 August 2026 KST to AtHeart’s own YouTube channel, with the copyright line naming the group itself rather than an outside label. The official description is unusually spare — the title, a few hashtags and a follow link, with no producer, songwriter or featured artist credited, and no parent album named.

Watching from outside Korea

Search engines usually strip punctuation, so ‘3!4!’ on its own returns very little. Pair the digits with the group name, and try the Hangul spelling 앳하트 as well as the romanised AtHeart — Korean-language results for a new group are far thicker than English ones.

→ Every AtHeart 앳하트 video on Oseyo Korea

More from Oseyo Korea — K-POP · Korean Food · Travel in Korea