But, Linn, if you can't get the BBC link just above your post, please believe me that the discomforted mouth-movements I mentioned occured while the horses were STATIONARY on Horse Guards Parade.

And, on a lighter note, cheers Big Al! But, one correction, I've questioned "Chords in FOLK" - not in, e.g., choral evensongs, of which I've enjoyed many, on Radio 3 and in "stalls" of the other kind!