I've been a huge fan of American indie stalwarts Yo La Tengo for a long time now, and one of their most consistently enjoyable albums is Fakebook, from way back in 1990. It's far from typical of their output, being made up of semi-acoustic cover versions of various obscurities (as well as retreads of a few of their own songs), but it's got a lovely, laid-back vibe.
Anyway, one of the songs on there, Griselda, comes from an album called Have Moicy!, by Michael Hurley, The Unholy Modal Rounders, Jeffery Frederick, and The Clamtones. A couple of weeks ago, I finally got round to looking it up on Spotify and having a listen, and it's great. It's folk music, but not as we know it. Robbin' Banks is a particular favourite of mine on there.