Jacob,
I only found tiny bits on the web, so I had to type it from a (mostly) German songbook, Der neue Zupfgeigenhansel. But it is also in several other (German) songbooks.
Rollo,
one can sing it cheerfully for that's its original intention I think. But with the shoah in mind this song really gets a new dimension. The new last verse is from here. This site has much more information but it's in German.

Wolfgang