Don’t Know What To Do
About the Song
about the song “Don’t Know What to Do” is one of the standout emotional tracks from BLACKPINK’s second mini-album Kill This Love, released on April 5, 2019. Written by Brian Lee and Teddy, and produced with 24, Bekuh Boom, and R.Tee, the song captures a softer, more vulnerable side of the group. While the album’s title track delivers overwhelming intensity, “Don’t Know What to Do” sits on the opposite end—light, melodic, and quietly heartbreaking.
Musically, the song blends airy synths, a bright pop beat, and open-space arrangements that echo the feeling of being lost after a breakup. The lyrics focus on that familiar emptiness: knowing a relationship has ended, but not knowing how to fill the silence that follows. BLACKPINK switches between delicate vocals and emotional harmonies, giving the track a sense of lingering nostalgia rather than dramatic sadness.
Though it wasn’t an official title track, YG promoted “Don’t Know What to Do” as the EP’s subtitle track. BLACKPINK performed it on Inkigayo and Show! Music Core, and the choreography video became one of their most-viewed practice clips thanks to its clean, elegant style. They also brought the song to the Coachella stage in 2019, where its dreamy drop and soft lighting created a memorable contrast against their more explosive performances.
Commercially, the song charted across multiple countries—entering the top five in Malaysia, the Billboard K-pop Hot 100 top ten, and eventually earning a gold certification from ARIA in Australia. Despite being a “b-side,” it grew into a fan-favorite for expressing a more relatable, human emotion: the quiet panic of not knowing what to do when someone you care about is suddenly gone.
[FULL LYRICS – ROMANIZATION & ENGLISH ONLY]
This song captures the emptiness and confusion that follow a breakup. On the outside, the singer tries to smile and act normal, but inside, every moment feels heavy and overwhelming without the person they loved. Even on a beautiful day, everything feels off — the ticking of a clock suddenly sounds too loud, and the world feels unfamiliar and uncomfortable.
The lyrics show someone trying to move on but constantly being pulled back by the memories they shared. They hate that they still hope the phone might ring or that a part of them is waiting for something that won’t happen. The repeated line “Don’t know what to do without you” reflects a heart that has lost its direction, unsure how to handle the emptiness that remains.
