I loved this song but now I can't remember the name of the singer OR the song. It's by a solo female and I think it was entirely Korean (no English parts), and is fairly slow and melodic.
In the music video, an older male appears to remember life with his young wife (that may be dead now?). He eventually meets a young girl who appears to be leaving school and starting a new job. I'm pretty sure she turns out to be his daughter.