Staff at the farm in York began playing the star’s Christmas hit 'All I Want For Christmas is You' during milking leading to each goat yielding an extra pint of milk per day.
The farm's founder Angus Wielkopolski, 57, said: "We are absolutely dumbfounded by the difference playing this song has made to the goats.
"It all started when the milk maids started listening to the radio when they were milking them. They immediately noticed the animals were more relaxed and started producing more milk as a result."
