All For You (응답하라 1997 OST)

Seo In Guk recorded "All For You" while still in his early twenties, and there is something in the performance that captures exactly that — a voice finding its full reach for the first time, committing with a purity of feeling that experience sometimes smooths away. The melody is structurally generous, built on ascending phrases that feel like confessions gathering momentum, and his delivery rides each wave without forcing it. The production sits closer to soft rock than pure ballad: there are electric guitars beneath the surface, a rhythm section that breathes rather than drives, acoustic warmth without acoustic limitation. His voice has a brightness to it, an open quality that makes declarations feel genuine rather than performed — when the song insists everything is for you, you believe it, not because it's convincing but because it sounds unconditional. The Reply 1997 drama used this song to score the particular agony of unspoken teenage love, the kind that exists entirely in internal weather even when the person is standing right in front of you. Listen to this walking somewhere familiar on a night when the air is warm and you remember being seventeen and wanting something you didn't have the language for yet.