The NBC Symphony Orchestra was a radio orchestra conceived by David Sarnoff, the president of the Radio Corporation of America, the parent corporation of the National Broadcasting Company especially for the conductor Arturo Toscanini. The NBC Symphony Orchestra performed weekly radio broadcast concerts with Toscanini and other conductors and several of its players served in the house orchestra for the NBC Radio Network. NBC encouraged the public’s perception of the Orchestra as a full-time organization exclusively at Toscanini’s beck and call, but Fortune disclosed in 1938 that these instrumentalists played other radio—and, later, television—broadcasts: “the Toscanini concerts have been allocated only fifteen of the thirty hours a week each man works, including rehearsals.”

Arturo Toscanini was an Italian conductor. He was one of the most acclaimed and influential musicians of the late 19th and early 20th century, renowned for his intensity, his perfectionism, his ear for orchestral detail and sonority, and his eidetic memory. He was at various times the music director of La Scala in Milan and the New York Philharmonic. Later in his career, he was appointed the first music director of the NBC Symphony Orchestra (1937–1954), and this led to his becoming a household name, especially in the United States, through his radio and television broadcasts and many recordings of the operatic and symphonic repertoire.