"What, in any, would the legal position if I posted the whole, or part, of say June Tabor singing it"

If it was already on the web legitimately somewhere, there's nothing to stop you linking to it (some web sites don't like you hot-linking their images, if very popular, because of bandwidth problems, but that's a different issue)

If you copied the June Tabor recording to a .MP3 file and uploaded that to your web site, you'd be in trouble for making the copy and publishing it.

But I think you are asking if the concept of "fair use" applies to recordings. I suspect it boils down to how much material you quote - a whole song would be too much. In some contexts I think there's a "two bar" limit for music, which is followed sometimes in TV adverts which quote a tiny but recognisable snippet of a well known pop song and don't have to pay a penny for it.

Well, it's only a matter of time before Richard Bridge comes along and tells us what's what - I believe he specializes in copyright law.

Anahata