Mice and Mendelson

Far to the north in England about a hundred years ago there lived an old Orkney pony whose name was Mr Mendelson. He belonged to the Old Lord of Midnight Park who had kindly given him a piano because Mr Mendelson liked to think about tunes. Everyone knows ponies can't play the piano, but Mr Medelson's close friends, Bertha and Gertrude the fieldmice, played beautifully and each evening at 6 O'clock they dashed to and fro over the black and white key's producing the loveliest mazurkas and minuets.