Ralphie: like I said, it would depend on the acts. Bellowhead for example depend on amplification and sound mixing.As do many other acts(including my urban folk fusion suggestion). But there are plenty of kinds of folk music in Britain that do not depend on amplification for their sound, and I think it would be a lovely experiment to do that in the Albert Hall one year for a folk prom. But I don't think it likely that this would happen, because the programming of such events is in the hands of people with acts to promote, and these acts are not in general the people who could explore acoustic(literal meaning) performance.But wouldn't it be a nice change, for one day in the year, to do it the old way?