The title from the nonsense song "Shave and a Haircut Two Bits (25 cents)" sometimes used at the end of a musical performance. American P.O.W.'s in the Vietnam war would authenticate a new prisoner's American identity by tapping the first 5 notes of "Shave and a Haircut" against a cell wall, waiting for the appropriate response.
When Mel is talking to Harry while he's getting ready for the banquet he tells Harry he wants to introduce him to his daughter "Melody". But, Mel in real life has two daughters, Melissa Torme-March and Daisy Tormé. Plus Three sons and Two stepchildren. None named Melody.