It's a guitar arrangement played by Hugh Laurie.
Assuming you mean season 3, episode 21, the song featured at the end of the episode is "Ain't No Reason", from the album So Much More by Californian folk/pop singer-songwriter Brett Dennen.
Union Strike Folk Song (look it up on Youtube!)
Yes. Tim Morgon was a "folk"singer who often played at the Ice House in Pasadena during th '70s. He was on guitar and had a bass player and a drummer. Quite a looker as well. Good voice.
Season 1 Episode 5 - 29:12
there r no islands in city folk
Amyl Nitrate
It's folk art monument to eccentricity and recyling, the beer can house z now one of Houston's most recognisable folk art icons.
The phone number of the Grant House Folk Art Center is: 360-694-5252.
The episode will not work if you do not play continuously for the week or so it goes on for.
season 2, ep 220
Hold that sucker down - O.T. Quartet
Folk music is played in... Ireland. Scottland England. America. Wales.