Young Ja Lee (b. 1931) is regarded as one of the most important living female composers in Korea. She leads and contributes to the Korean classical music society as a gifted composer and a dedicated educator. This study focuses on how she has combined Western compositional techniques with elements of Eastern traditional music in some of her compositions, in particular, her Variations pour piano "Umma ya, Nuna ya." An interpretation of her Variations pour piano "Umma ya, Nuna ya" reveals that the composition features many of the particular and sublime aspects of Western compositional techniques in conjunction with traditional Korean music style. This study is an investigation of the interaction and assimilation of these disparate elements. The results of this study may inspire further research into traditional Korean music and bring recognition to important Korean composers, as well as encourage music educators to teach Korean composers' compositions.