I am SURE he is singing 'treble tail'. That's what made it unusual. I expect draggle tail was the source of this name, though. (By maybe my ears have gone!)

I will try and upload some extracts to my web site soon.
(I have only just installed an MP3 editor, so I can make some small clips.)

Barry Skinner is a distinct possibility. I know we did have him at Pontardawe.