I was diagnosed with tinnitus over 50 years ago. It has never gone away and at times was very aggravating. While going to college and grad school, I noticed I could study and concentrate much better if I had some light classical music playing in the background. The music seemed to cover the ringing and provide just enough distraction that I could study. French horns, woodwinds, and piano instrumentation seem to work best for me. As I sit here writing this I am still listening to some soft classical music while reading. Thanks to mikepa and Julie for some info on research. I will look into this.