From the label's beginnings in 1902, and intensifying through the 1940s and 1950s, RCA Victor was in direct competition with Columbia Records. A number of recordings were made with the NBC Symphony Orchestra, conducted by Arturo Toscanini; sometimes RCA Victor utilized recordings of broadcast concerts (Toscanini had been recording for the label since the days of acoustic recordings, and RCA Victor had been recording the NBC Symphony since its creation in 1937). After Toscanini retired in the spring of 1954, the NBC Symphony was reorganized later that year as the Symphony of the Air. The orchestra, while no longer connected to NBC, continued to record for RCA Victor, as well as other labels, usually conducted by Leopold Stokowski. RCA Victor also released a number of recordings with the RCA Victor Symphony Orchestra, which was usually drawn from either Philadelphia or New York musicians, as well as members of the Symphony of the Air, and the orchestra of the Metropolitan Opera. By the late 1950s, RCA Victor had fewer high prestige orchestras under contract than Columbia had: RCA Victor recorded the Chicago Symphony Orchestra, the Boston Symphony Orchestra, and the Boston Pops, whereas Columbia had the Cleveland Orchestra, the Philadelphia Orchestra, and the New York Philharmonic Orchestra under contracts.