Do play gently - if that is the right way to describe it.

I was once in a packed room with no easy way out, and someone started to play an accordion with great force and energy - and I almost went mad.

I can hear quite high frequencies - some bats and dog whistles for instance, and the harmonics from the reeds being hammered so hard were excruciating. I was, apparently the only person in the room who could hear them so people were mystified over my tears and my trying to block the sound, but if I could have got out I would have done - or I might have something extreme.