"Admiral Boom" is a deleted song from Mary Poppins. It was to be the theme song for the cannon-firing neighbor of the Banks Residence (to be sung by Reginald Owen and Don Barclay), but it was cut by Walt Disney himself as being unnecessary. The melody of the song remains in the film, however, and the bombastic theme is heard whenever Boom appears onscreen. One line from this song ("The whole world takes its time from Greenwich, but Greenwich, they say, takes its time from Admiral Boom!") is spoken by Bert early in the film.