All of the music used in the newsreel came from the RKO music library, edited at Welles's request by the newsreel department to achieve what Herrmann called "their own crazy way of cutting". The "News on the March" theme that accompanies the newsreel titles is "Belgian March" by Anthony Collins, from the film "Nurse Edith Cavell". Other examples are an excerpt from Alfred Newman's score for "Gunga Din" (the exploration of Xanadu), Roy Webb's theme for the film "Reno" (the growth of Kane's empire), and bits of Webb's score for "Five Came Back" (introducing Walter Parks Thatcher).