I've had a high-pitched ringing in "my left ear," since 28 May of 1989. I couldn't tell you if I can still hear high notes or not because I can sure as heckify hear this one! It has its uses, as, when I lie on the other ear, I have learned to let it be white noise. Nothing else disturbs me, and I have retained the feature of being a light sleeper. Life is weird. Our bodies are amazing. ;)