The National Symphony Orchestra (NSO), founded in 1931, is an American symphony orchestra that performs at the John F. Kennedy Center for the Performing Arts in Washington, D.C. For the first period of its history, the orchestra performed in Constitution Hall. During the tenure of the first music director, Hans Kindler, the musicians received a salary of US$40.00 per week, for three rehearsals and one concert, for five months of the year. Kindler and the orchestra made several 78-rpm recordings for RCA Victor, including the two Roumanian Rhapsodies by George Enescu; much later, in 1960, the orchestra would perform the first of these works under the baton of the visiting Romanian conductor George Georgescu, a close associate and favored exponent of the composer.