25th April 1974
Portugal The Path to Freedom.pdf
The beginning of the military coup that sent the military out on the streets was the song "E Depois do Adeus" by Paulo de Carvalho.
The second very relevant song in this pacific revolution was "Grândola Vila Morena " by Zeca Afonso.
Another intevention song present in the students' presentation is "Mudam-se os tempos, mudam-se as vontades" by José Mário Branco
If you want to know why this pacific revolution was called the Carnation Revolution read the story about Celeste Caeiro
https://en.wikipedia.org/wiki/Celeste_Caeiro