I was a film sound recordist/mixer and, due to listening at high SPL, suffer from a substantial loss in one ear at 4,000 Hz and I suffered from Tinnitus for a number of years which, fortunately, has mostly subsided (I can still hear a sssshhhh sound in the background and when I am trying to go to sleep, but does return full-on occasionally and, when it does, it causes mortal fear that it is back for good. The hearing loss and Tinnitus caused me to change careers. Recently, I was at a music awards concert where the mix was way too hot/loud and my ears were starting to ring so I had to leave. The fool at the mixer was/is destroying people's hearing, maybe he already has hearing loss which is causing him to blast everyone's ears.