This was the last movie to be made using Rank's "Independent Frame" production system. The system proved to be a costly flop.
Principle 1st Violinist of the Royal Philharmonic Orchestra, Scottish born David McCullum (Snr) had a small speaking part as well as actually playing violin and ultimately conducting in the final concert. He was also the father of equally Scottish actor, David McCullum.
Christopher Lee appears as a guest at the pre concert party just as it is announced the boy is not quite ready to meet the guests.