But the simple reality is they don't teach moveable-do because it's too mind-twisting, Jack. As it is in the Belgian school system, they insist on a year's fixed-do theory before even touching an instrument: I think it's a way of thinning out the field as there's not enough instruments to go around. When you start talking modes to experienced Belgian folkies, a glazed look of horror passes over their faces when they realise they have to raise anchor and work in relative intervals. Sure, they've heard of modes, but don't dare set foot there lest their theory becomes self-consuming.