Sometimes on documentaries about blues music there are old film clips in the Southern States showing a wooden shack with a string attached very basically to the porch so the shack resonates it and it is played with a bottle slide fashion. This is more basic than a teachest bass in the skiffle era.
Would be interesting to know if this instrument of sorts had a name and does anybody know what it was called?
No good trying it here in Britain as the string would go rusty in no time.