Jeong Yulseong was an independent fighter representing the anti - Japanese impression of Korea and China by music. In fact, his reputation was limited into a composer. He, a representative composer in China who was known for ‘the Yanan Song(延安頌)’ and ‘the March Song of the Balujun Army’, went to China for the independent movement in 1933. He was one of the members of the 2nd graduating class in the Joseon Revolution Military Official School and took part in the front of the independence war with his classmates including Kim Seunggon. He learned military science and politics at the school. Subjects related to the military included tactics, topography, simplified measurement, infantry training manual, marksmanship and bombing. Completing the course and watching his members singing the international song, song of the red flag, the boys vanguard song, song of the showdown, he was especially interested in composing of revolution songs. Whenever he had spare time, he was very eager in creating that kind of songs and finally composed the famous song ‘the March Song of the Balujun army’. After he graduated the school in 1934, he stayed in Nanjing and collected informations on Japanese people while his classmates were sent to Manchuria. After graduating, he concentrated on the music and was enthusiastic about playing the piano. He went to Shanghai through one of his friends and got to know professor Chrino who was one of the members in Reningrad opera. And later, he enjoyed in the Nanjing literature club and showed his great musical talent. But in the Sino-Japanese War, he moved to Yanan. At the time, Kim Sengsuk played a critical role for him. In Yanan, he entered into Luxun Art Academy and composed the famous two songs, ‘the Yanan Song’ and ‘the March Song of the Balujun Army’. Later, this song obtain the approval as ‘the Song of the People’s Liberation Army of China’. Though, he didn’t think music as only a weapon. He also showed the aspect of an independent fighter performing well as a miliary official in Yanan and Taihangshan. Being eager to recover the country by the music, he also didn’t refuse to be in the front line showing his strong will against Japan. He was interested in setting up an education program for training human resources and became an education chief of Yanan Joseon revolution miliary school in 1941. In conclusion, as he focused on the music, at the same time, he was also an independent fighter and strategist who carried out as a military official in the Joseon Joseon Volunteer Corps.