"One day" is the second studio single by Nguyen Ken, following the release of Medicine. This track features the emotional vocals of Mabel and the unique energy of rising VPop artist Yellowa. The song tells a story of two people who were once deeply connected, but eventually lost each other along the way. Not because they stopped loving… but because they met at the wrong time. It captures the lingering feelings, the unspoken words, and the quiet hope of meeting again someday — even if it’s just to share a smile. Blending melancholic melodies with heartfelt lyrics, Hẹn một ngày takes listeners on an emotional journey — from soft confessions to inner struggles, and finally to a bittersweet sense of acceptance. If you’ve ever missed someone, or wished for one more chance to meet again… this song is for you.more