Today is a national holiday in Portugal, it is the day of the liberation from the dictatorship in Portugal. This song was the one that gave the signal for the start of the revolution. I already made a post about it in January, you can see it here.

https://imgprxy.stacker.news/TYBT2v9fpSmwo9tpHHpw_dMfvgQCOTR7qRY_6nlPiJE/rs:fit:1920:1080/aHR0cHM6Ly9pY2hlZi5iYmNpLmNvLnVrL25ld3MvMTAyNC9icmFuZGVkX3BvcnR1Z3Vlc2UvYTEyYS9saXZlLzRmYTVlN2IwLWRlMzEtMTFlZC04ZGYxLWQ3NGNiZjEwODlkNy5qcGc