Sleepless Night (괜찮아 사랑이야 OST)

A late-night R&B piece built on the softest possible foundation — a sparse electric piano, brushed percussion barely touching the surface, and Crush's voice floating somewhere between wakefulness and surrender. The production is minimalist in a way that feels deliberate and confident, trusting silence to do as much work as sound. Crush's vocal delivery is characteristically cool yet tender, with a slight breathiness that makes every note feel like it's being exhaled rather than sung. There's no grand climax, no release — the song stays suspended in that particular 3am emotional weather where longing and acceptance coexist without resolution. It belongs to the drama's thesis that love and psychological pain are not opposites but companions, and the music embodies that with eerie precision. Reach for this song when you're lying in the dark, not quite sad but not quite settled, turning over something — or someone — in your mind without wanting the thoughts to stop. The restraint in the arrangement is what makes it hurt: nothing is overstated, which means everything lands.