I've not seen any songs about Dred Scott either, but I would be interested in the title of the one you found about Habeus Corpus.
Here is the link:
Hmm. That didn't seem to work.
Go to this site: http://memory.loc.gov/ammem/amsshtml/amsshome.html
And search for "Taney" and it should come up. The title is "Chief Justice Taney".
I'm not sure why the first link didn't work when I tried it.