썸 (feat. 소유)

This became a generational touchstone of Korean pop in the mid-2010s, and the chemistry between Kwon Jeong-yeol and Sistar's Soyou remains the recording's central pleasure. The production — bass-heavy acoustic funk with a groove unusual for Korean ballad territory — gives the song forward motion perfectly mirroring its subject: the undefined relational stage where both parties know but neither confirms. Kwon's slightly bashful delivery contrasts with Soyou's warmer, more direct warmth, and that contrast enacts the song's emotional content rather than just illustrating it. The lyric is about "썸" — the Korean cultural concept of the pre-relationship stage, the prolonged ambiguity before declaration — rendered with near-sociological precision. This is one of the rare pop songs that captures a specific relational state rather than the more dramatic poles of romantic narrative. The two voices arguing toward the same conclusion from different emotional positions gives the song a dynamic that monologues can't achieve. Culturally iconic, it functions as a generational reference point. Play it when you're in exactly the situation described, or when you nostalgically wish you were.