사랑을 했다

어쿠스틱 콜라보 works in a register that is genuinely rare in Korean pop: unhurried, guitar-forward, comfortable with silence. The track opens with fingerpicked acoustic strings and stays close to that texture throughout, building only gently with a piano line and a rhythm section that never crowds the melody. What defines the song is the duo's vocal interplay — the two voices trade and layer with the ease of people who have been singing together long enough to listen more than they perform. The title translates roughly as "we loved," and the retrospective framing shapes everything: this isn't a song about heartbreak in the raw present but about looking back on a love that has already passed its peak, understanding it more clearly now that some distance exists. The mood is bittersweet in the original sense — not devastated, not resolved, but holding both feelings without forcing either to win. Musically, it belongs to the Korean indie folk wave that emerged in the early 2010s, rooted in honest craft rather than production sheen. You reach for this on a slow Sunday morning when you're cleaning the apartment and a memory surfaces without warning — not a painful one, just present, just true.