The National Symphony Orchestra followed Kim Il Sung’s line on building Juche’s national culture and created and performed dozens of works such as the multi-movement symphony "Yaluk River" on the recovered land, which strongly inspired the North Korean people. Engage in the struggle to build a new motherland. During the Korean War, many works such as the symphonic poem "For Victory" were created and performed in the highlands where bullets were raining and in the rear where flames were everywhere, which enabled the soldiers and people of the Korean People's Army to bravely engage in the decisive battle.

During the period of post-war recovery and socialist construction, the troupe created and performed dozens of musical works that combined national forms and socialist content, effectively inspiring the Korean people to implement the Workers' Party of Korea policy. In 1970, under the personal guidance of Kim Jong Il, the National Symphony Orchestra innovated a popular orchestral music that combined foreign and national instruments based on well-known famous songs and folk songs, ushering in a new era of North Korean orchestral music. ushered in the heyday of its own development.

Another special feature of the North Korean National Symphony Orchestra is that, like the famous Berlin Philharmonic Orchestra, all the players are composed of men. Their pursuit of a uniform and masculine style is their characteristic. The body swaying movements of the players when they pull the strings are all very neat and enjoyable to watch. Another thing that the performers are proud of is that they are all top students who graduated from North Korean institutions of higher learning. Most of them went to famous European music academies for further studies. Therefore, many of them were awarded the titles of People's Artists of North Korea, People's Actors, Merited Artists and The title of meritorious actor. Because of this, they have participated in world-famous international music festivals many times and have been a hit every time.