사랑은 유리 같은 것 (사랑을 잃고 나는 쓰네 OST)

Naul is one of the few Korean vocalists who can move between registers with the seamlessness of someone changing languages, and this track demonstrates that gift across its entire length. The production is soulful in a way that references American R&B without being imitative — there are chord progressions here that belong to the language of neo-soul, guitar work that shimmers rather than drives, a rhythm bed that breathes rather than pounds. His falsetto appears like a question and his chest voice arrives like an answer, the two in constant conversation throughout the song. The lyric uses glass as a metaphor for love — transparent, beautiful, dangerously fragile — and the production honors that metaphor by building something that sounds equally delicate, equally prone to shattering if handled carelessly. This film soundtrack track was part of a project exploring what it means to lose love and find language for what remains afterward, and Naul's voice is perfect for that subject: it contains beauty and melancholy in equal, inseparable measure. The song belongs to a generation of Korean R&B that took the genre's emotional vocabulary seriously as art rather than formula. Reach for it on slow Sunday mornings when the light comes through in a particular way and nothing needs to be done or decided yet.