Lou & Peter Berryman (no relation*) are consummate comedic folksong writers & singers. They are based in Madison, Wisconsin.
biography: https://www.allmusic.com/artist/lou-peter-berryman-mn0001241814/biography
* They were originally a married couple & singing partners. They fairly quickly got divorced and married other people but (to the delight of their many fans) returned to writing songs, performing & recoding together for many years.