Korean jazz ballad with brushed swing feel and a slow late-night groove; verse stays sparse with upright bass, soft keys, and muted drum brushes, pre-chorus opens with rising chord tension and breathy doubles, chorus lands on a warm melodic lift with stacked harmonies and gentle call-and-response, bridge strips to voice and bass before the final chorus blooms; intimate close-mic lead, delicate harmony swells, tape hiss, faint room tone, and a soft sax-like synth turn between lines; warm, dusky, cinematic mix