신행일 - Sin Heng-Il

One song can be found here :

가요(歌謠) 박물관 / Music Museum: 220 Best [Disc 5]

18 청춘을 돌려다오 / Returning Youth (1967)

I found not much more than one track of this singer on all the compilations I have. It's just mainstream pop trot.

#KoreanPop #S #trot