They don't make musical shorts like these any more. You not only were entertained but learned something in the process. You gained knowledge which if may only have helped you on a quiz show, still it's always nice to learn.
Song Of Revolt concerns the writing and popularity of the most stirring national anthem of all, France's La Marseillaise. Leon Ames plays Claude Joseph Rouget DeLisle, a French officer who had a gift of composition and wrote a stirring marching song for the French Army to be inspired to expel invaders like the Prussians who were taking advantage of the chaos in France during their revolution. Instead the song served as an inspiration against those who had oppressed the common folk. It still does today.
DeLisle (1760-1836) died a poor man, but certainly lived long enough to see how his song would be received through the ages and certainly long enough to appreciate the irony.