It's a little hard to hear because of his history with the pop-punk Presidents of the United States of America, and because his Caspar Babypants project has such a whimsical pop sensibility, but Chris Ballew's work as Caspar Babypants is very, very folk. His originals generally have a simple core, easily replicable as sung work by the novice. And he's very committed to reworking folk song classics and giving them new life.
For "Froggie Went a Courtin'," perhaps the hoariest of folk song chestnuts, Ballew ditches the amphibian's sword and pistol, and replaces them with a ring and bouquet -- because Froggie's asking to get married, duh. It's not that this new version is any better than the thousands that have come before it (though it's better than a lot of them), but his willingness to make the song his one is folk as anything.
The song is on his forthcoming album Jump for Joy! (out August 18), and as with many of his videos, features Ballew's own drawings. (Look for Beatle John.)
Caspar Babypants - "Froggie Went a Courtin'" [YouTube]