Short-form video platforms are increasingly reshaping the structure of K-pop songs, with brief moments designed as viral hooks often determining a track’s success. In the past, the overall flow and musical development of a three- or four-minute track were key factors in determining a song’s success. Today, however, a roughly 15-second viral hook — the segment most likely to spread through short-form videos and dance challenges — can make or break a song’s popularity. As a result, the average run