As requested, I have now uploaded Barry Skinner's (1972 or 1973) Pontardawe gig (As much of it as I recorded) to the following address
Ivy Bush Gigs
it is about a 15mb download though.

A few years ago, I had an email discussion with him and Malcolm Douglas about the "Treble tail gypsies", which is a unique variant of the song title. Barry just said that he got it from another singer. Malcolm had never heard of that name before.

You can also find a number of other sessions there, Diz Disley, Alistair Anderson etc.