Noson Lawen is a 1949 Welsh language Welsh film directed by Marc Lloyd and starring Meredydd Evans, Ieuan Rhys Williams, Nellie Hodgkins and Robert Roberts.
Ifan, a farmer's son living in the Welsh hills, dreams of an academic career.
His father, his mother and his wife, Gwen, use nearly all of their money to pay for him to go to a university and are terrified that he may fail his exam, and it will all have been for nothing.
After the ceremony, Ifan introduces his friends, Emlyn and Hywel to his mother, father and lively grandfather.
Then the Grandfather gets up on the stage and begins dancing around like a lunatic singing with an incredible voice.