I took that from the Berlin to Broadway book. When I've done music from Mahagonny, It usually seems like even the melodic stuff is angular and dissonant. I don't even attempt to accompany myself on this, because my folk harp doesn't have that kind of chromatic capability, but I would consider a really simple version based on the bass clef along the lines of Gary T's version. It seems to me that Weill's orchestration had a prominent banjo part. I'm not sure how to get hold of it, but that might be easier to analyze and use.

Now I'm getting interested and challenged, I may have to try it out at home on the harp.

Mimosa