"Once Upon a Christmas Song" is a Christmas single, and the second single to be released by fictional character Geraldine McQueen. It was co-written by Gary Barlow and Peter Kay who plays the character, originating from a parody talent show called Britain's Got the Pop Factor.... The song was a major success, reaching number 5 in the Official Charts for the United Kingdom. The CD was released on 15 December 2008, with the download available a day earlier and the proceeds going to the NSPCC, a British charity working and campaigning on child protection. In 2016, an instrumental version of the song served as the theme tune to BBC One's compilation series Peter Kay's Comedy Shuffle.