The Columbia Symphony Orchestra was an orchestra formed by Columbia Records for the purpose of making recordings. In the 1950s, it provided a vehicle for some of Columbia's better known conductors and recording artists to record using only company resources. The musicians in the orchestra were contracted as needed for individual sessions and consisted of free-lance artists and often members of either the New York Philharmonic or the Los Angeles Philharmonic, depending on whether the recording was being made in Columbia's East Coast or West Coast studios.