yeon) - 했어야 했어 (Shouldn't Have)

Baek A-yeon anchors this track in the tradition of the Korean dramatic ballad but pushes it forward with production that carries genuine weight rather than relying on orchestral excess. The arrangement is built on piano and strings that swell deliberately, knowing exactly when to pull back and let silence do the work. Her voice is the emotional engine here — capable of extraordinary power, she chooses control over explosion for much of the song, making the moments when she does open up feel genuinely earned rather than routine. The lyric turns on regret — not the hot, immediate kind, but the retrospective kind that creeps in once distance has given you clarity, the recognition that certain words should have been said and certain choices made differently. There's a particular Korean emotional vocabulary at work: 한 (han), that layered sense of grief and longing tied together, runs beneath the surface without ever being named. Moods shift from something almost measured in the verses to a chorus that opens into real anguish, then recedes again, mimicking the way regret actually moves through a person in waves. This is music for someone processing the end of something important — suited to a quiet room, rain against a window, the kind of night where old memories arrive uninvited and demand to be felt rather than managed.