The repetitive hook — “Boom, boom, chk, chk, boom” — functions like a rallying cry, while lines such as “Ra-ta-ta-ta, I’ma make ... songs underscores the broader power of lyrics in K-pop.

A cheerful song by one of the most successful K-pop girl groups has emerged as a ... dancing to the upbeat song with hopeful lyrics. "We will (do it) together no matter how long it takes in ...