The Orchestra and Its Instruments was a British television programme which aired in 1937 on the BBC. The series debuted on 5 January, and was hosted by Philip Thornton. The series discussed the different instruments of a symphony orchestra. It aired in a 20-minute time-slot. It was one of the earliest documentary series produced for television.
The series is lost, as it aired live, and methods to record live television did not exist until late 1947, and were used very rarely by the BBC until the mid-1950s.
References
The Orchestra and Its Instruments Wikipedia(Text) CC BY-SA