Revolutionary songs are political songs that advocate or praise revolutions. They are used to boost morale, as well as for political propaganda or agitation. Amongst the most well-known revolutionary songs are "La Marseillaise" and "The Internationale". Many protest songs can be considered revolutionary - or later become canonized as revolutionary songs following a successful revolution. On the other hand, once a revolution is established, some of the aspects of protest song may be considered counter-revolutionary.
Revolutionary songs are a notable part of propaganda. The singing of such songs is often considered as a demonstrative or revolutionary action. Such songs have been known to lend solidarity to disjointed political communities. Some revolutionary songs have appeared spontaneously; others have been written by notable authors, such as Bertolt Brecht. Revolutionary songs are frequently targeted at certain governments.