BTW, if you look them up on Youtube you'll find a man far ruder about their playing and particularly singing (indeed perhaps unjustly so) than I.

Unless of course you mean the troll on our Come Write Me Down whose comments reveal much about the inherent idiocy that one often encounters in folk when people can only cope with things being done in particular way and assume it's somehow 'right' or even (gulp!) 'traditional'. It's a shame that he (it's always he) evoked the sacred name of Shirley Collins in support of this claim. But, as I say, that's what you get for posting on You Tube! The first time I've threatened to delete further comments...

Anyhoo, no Kaossilator here, Richard, as it's out of tune with Rachel's lap-top harmonium (now retired) which is in 'Indian pitch' - if such a thing exists; all Indian things tend to be in an old military pitch several cents sharp of concert. A legacy of the Raj?   

https://www.youtube.com/watch?v=9IJQzcyDTQI