When I used to go to places where there was loud music I used to wear ear defenders - I do have tinnitus thanks to a moron with a starting pistol, but my general level of hearing is still quite acute and I am told it is above average for someone 62 years old. (If so why don't the bats squeak any more? It gives me quite a shock when a stealth bat swoops low.)

Sure I got some odd looks, but it also made some sound engineers go a bit thoughtful.