Metronome is a track by South Korean girl group izna, built around the literal ticking of a metronome as a metaphor for timing, heartbeat and performance. The short soundboard excerpt isolates that ticking pulse, which is why it travels well outside the full song, appearing in fan edits, dance practice clips and short-form videos where creators need a clean rhythmic cue. Its appeal is practical rather than nostalgic: the steady beat instantly signals precision and anticipation, and it pairs naturally with choreography, countdowns and transitions in K-pop fan content.