I hope that's not a recommendation for making it too loud.
That's how some of the folks got deaf in the first place.

Volume leads to hearing loss. It is just like smoking, it's not the first, nor the last that kills you. It is the 40 years in between. And just like smoking the effect is cumulative and proportional to dosage.

And just like smoking it effects other things too - though I haven't seen any reports of it clogging-up arteries and ruining "that".

The World Health Organisation have produced a report expressing concern about relatively low level noise from urban living raising hormone (not those) levels like adrenaline and cortisol and it increases the death rate in those with heart conditions. Drinkers and smokers amongst them.

Deaths during Folk concerts are rare - but there was one during the Cheltenham Folk Festival, this year. How soon before we have to issue a Gov Health Warning?

Lets face it - you wouldn't create a loud bang behind a person with a week heart - would you? Loud music has a similar effect - but more slowly.

Apple are bringing-out an iPod that reduces the volume if it has been set too loud too long. Litigious America (and here in the UK now) is not unconnected with this decision.

And you try telling that to organisers. They won't believe you.