As in the US, and influenced by Pete Seeger, Joan Baez, Woodie Guthrie, PP&M and all others, especially during the 1960's and 70's, also here singer songwriters and bands revitalized the tradition of folk songs. In the 70's Hannes Wader and others made the following song popular again.
It's from the 1850's, 200 yrs after the 30-years-war, when still a dozen of ducals in the German speaking regions exist, and a lot of bourgeois wanted a unified German republic instead of principalities. Also very convenient to the ideals of the 1960s/1970s with flower power, against Vietnam war a.s.o.
Poor vid quality, but I hope the translation gives an idea: