Donna doesn't know it yet, but when she walks through the door to her secret 50th birthday celebration they will be playing Donna by Marty Wilde. Not Donna by 10CC or Donna by Ritchie Valens, but the cover of Valens' song which is "nicer" than the original.
As part of his set, the DJ will play Hey There Lonely Girl by Eddie Holman, the first song which Donna really liked in her teens.
For my 50th birthday bash I'm hoping to walk into the room to the strains of Space (Jefrey With One F) by The Pixies. I will later have a little smooch to Bohemian Rhapsody.