She was speaking to Graham Parker, general manager of WQXR, a classical music radio station in New York.

The Duchess is reported to have said: “I am listening to a lot more classical music at home with George, so we are all learning together”. She also asked Parker whether classical music radio was thriving in the city.

Prince William and Catherine were on their first official visit to New York. Prince George, now nearly 17 months old, did not accompany them.