From the groaners listserv, the author is unknown.

A sheep farmer went to the veterinarian and said he was having trouble with a ram who kept banging his head against the barn. The vet said that the ram probably had jittery nerves and that the playing of some music in the barnyard during the day would calm him.

Several weeks later, the vet visited the farmer and found that the ram had died.

“Did you play some music for him as I suggested?” asked the vet.

“Yes,” said the farmer.

“What did you play?”

“I played Frank Sinatra singing, “There Will Never Be Another Ewe.””