XD nooo it's not a lullaby. the title is like "the round/patrol of the soldier" and it basically tells the story of someone not wanting to be in the colonial war and being against it and deserting so the lyrics is somewhat meta too if you get the circumstances(f. ex. jose mario branco lived in exile in France because he was protesting against the war). another one of those famous protest songs from back in the days.
and nice :0 my city is kinda big so you have to take train or buses everywhere if you wanna go somewhere