He conducted the National Symphony Orchestra from 1950 to 1969.

He was also the program annotator for the National Symphony Orchestra from 1934 to 1943.

She was a volunteer fundraiser for the National Symphony Orchestra.

Don't miss a performance by the acclaimed National Symphony Orchestra.

The National Symphony Orchestra was so popular, it could be sustained by its own economic resources.

He became principal clarinetist of the National Symphony Orchestra in 1940.

The concert is part of the National Symphony Orchestra's monthly family series.

At age 17, he became the youngest member of the National Symphony Orchestra.

National Symphony Orchestra is used for the name of many orchestras in different countries.

"I suppose the musicians are from the National Symphony Orchestra."