Radio City Music Hall of the Air was a weekly American radio program broadcast on the NBC Blue Network from 1932 through 1942 that featured a range of classical music programing extending from symphonies and other kinds of orchestral works to operas, oratorios, chamber music, choral works and other kinds of classical music literature. The program was usually broadcast live on Sunday afternoons at noon from Radio City Music Hall (RCMH) in front of a live audience in the theatre. Broadcasts featured the RCMH symphony orchestra under conductor Ernö Rapée. The program was typically an hour-long, although occasionally the program's running time would be extended to a lengthier time block if they were performing a complete masterwork such as an opera.