Therefore the composer of children’s song “Kaulbamiji”s not Yi T’ae-son but Yi Chimg-gu. ... their defecting to North Korea, so Yi Chung-gu was changed into Yi T’ ae-son and his children’s song ... Meantime Yun Bok-jin’s “Kirogi” and Yi Chong-gu’s “Kaiilbam” sung at the same time couldn’t be sung after