Hamish often told the story, and it is in his book Cod Liver Oil, of being pressed to sing something in Germany - the Hamburg red light district I think - at a table with friends in a bar late one night. The bar's guitar was terrible and Hamish had to think what was simple enough to work with such an instrument. He sang Sonny's Dream, and a whore at the bar bought him a drink! Hamish thought, "There's something special here!"