Prince Charles and his wife Camilla greatly enjoyed being treated to a display of Inuit throat singing.

However, the pair could not control their giggles at the unusual technique.

The footage emerged from their recent tour of Canada and amused Royal fans, who noted the two have previously said they bonded over their shared sense of humour when they first met many years ago.

The pair catch each others eyes and laugh uncontrollably at the performance.

Inuit throat singing is traditionally performed in a duet by female performers, who engage in a competition to see who can last the longest.

They sing by breathing in and out and the person who manages to keep this going for the longest time wins.