가슴 뛰도록

SG Wannabe built their entire identity around layered male vocal harmony — three voices that move together with the precision of long practice — and this track puts that instrument to its most exhilarating use. The production sits somewhere between polished stadium ballad and the slightly theatrical flair that defined mid-2000s Korean pop romanticism: synths that shimmer faintly in the background, percussion that escalates alongside the vocal energy, a tempo that feels almost breathless, like someone running toward something. The harmonies arrive gradually, individual voices distinguishable at first before weaving together into something larger than any single singer could produce alone. Where most ballads reach for melancholy, this one is propelled by exhilaration — the title describes a heartbeat racing, and the song genuinely sounds like that physiological event, like the chest opening up when attraction turns into something you can no longer ignore. There's an innocence to it that belongs specifically to that era of Korean pop, before the genre became globally calculated; it sounds like something made for people actually in the middle of falling in love, not performing the concept of it. This is music for the early days of something new — driving somewhere you've never been, watching your phone for a message that hasn't arrived yet, experiencing the particular discomfort of happiness.