Perhaps I should start a new thread just about one particular song, namely Wilde Gesellen, but it has been mentioned first here, so I add some information here:

Wilde Gesellen vom Sturmwind durchweht (German only) gives a different account from Wilfried's above:

(my summary)
- The song was collected from oral tradition, not written, by Sotke.
- The song soon disappeared from Nazi songbooks after the first print.
- It was sung by all kinds of groups in opposition to the Nazi regime.
- It appears in the samisdat songbook of the KZ-Sachsenhausen prisoners.

So how old it is exactly cannot be said, but it is much more a song of opposition to power than of anything else:

A wild bunch of comrades we are
blown about by a heavy storm,
Counts in rags...

Wolfgang