I've noticed that Scots accordion players like Shand, MacLeod, Johnstone and co are/were forever whizzing along the counter-bass row and hardly ever playing the oompah type of bass. I can't seem to see this much counter-bass action on Scots printed music, reels, jigs etc, so can we assume they were improvising their own basses as well as doing a 'virtuoso-job' on the treble? Any Scottish Dance Band guys around to explain what they're up to????