What does OST mean in K-Pop?

Term

OST

Original Soundtrack

Full Form

Original Soundtrack

Definition

Original Soundtrack — a song made for a drama, film, or show. Idol OSTs often introduce artists to new audiences beyond their fandom.

Context / Example

“That drama OST charted higher than their last title track.”

About this term

OST means original soundtrack — songs made for dramas, films, or shows, often sung by K-Pop idols as solo features.

OST charts and MV views can introduce artists to new international listeners beyond group comebacks.

Is an OST part of a group album?

Usually it is released under the drama/film OST project, separate from group discography.

Why do idols sing OSTs?

For exposure, storytelling fit, and solo vocal showcases during busy group schedules.