"Under the Blasted Oak" is a comic song written by George Formby and Frederick E. Cliffe. Formby recorded it on 11 October 1942 for Regal Zonophone Records. It tells a humorous "ghost story" about the attempts of Formby and his girlfriend to find a buried stash of money, hidden by a miser under a blasted Oak Tree. The miser makes an apparently ghostly appearance, only to turn out to be wearing a sheet.
The song features in Formby's 1943 film Get Cracking.
References
Under the Blasted Oak Wikipedia(Text) CC BY-SA