I'm sure "Blackleg Miner", gave a few subtle hints in it's day.
Read Peggy Seeger and E MacColl's Springhill Mining disaster song was instrumental in changing mining practices in Nova Scotia

P. Kearney's Soldiers Song , The original version in English, was sung by the Rebels surrendering in Dublin ,1916. They sung it coming out of the GPO and later when they were being marched for transportation,as a mark of defiance. This act of defiance in the face of , apparently,absolute defeat helped change Dubliners attitude to the Rebels and attracted more to their cause. The Song later translated into Irish , became the National Anthem