In a recent comment section, someone linked to Tom Lehrer's "The Folk Song Army." (Was it Gringo? Carl? Gringo, you would like Carl's site, BTW)
Yeah, I know that was only his voice, not Lehrer in performance - though you've got to like Pete Seeger in that Lenin pose. But I hate to tease the audience that way, so here's Lehrer live - so many to choose from.