I play a song called "I'm A Drifter" which I have only ever heard done by Vince Martin and Fred Neil. The way I play it involves, E, B minor, G (third fret), and A (fifth fret). When called for, a C9 is also used. All of these are played as three-finger chords with no barre (in other words, open strings, standard tuning). The chords are played in rather quick succession. I learned (at Annap's first gathering) never to attempt this song after having consumed more than two beers!