A sign by the road in northern England.
Perhaps something rural and English? Folk songs, minstrels strumming, maybe some Morris Dancers?
My first thought was that this was petty revenge for the British Invasion of the US music market in the 1960s. But I looked a couple of these bands up. They all seem legit and all seem to be enjoying themselves.
I mean, you have to like a band called Root'n Toot'n who bill themselves as a Hillbilly trio and whose latest CD is "Another Nail in My Liver"