[제4차 사랑혁명 OST Part.1] 배이 (NMIXX)

Up&Down, featured in [The 4th Love Revolution OST Part.1], marks a powerful solo performance by Bae of NMIXX. Blending rock and metal elements with emotional intensity, the track captures the highs and lows of love in a dramatic, cinematic style. Released on November 13, 2025, under KBS Media, this OST single showcases Bae’s vocal versatility and raw expressiveness, perfectly complementing the series’ themes of passion, conflict, and transformation. It’s a bold musical statement that adds depth and energy to the unfolding revolution of love.