Billy Squire, opening up for Bad Company and Styx in Toronto at the Budweiser Stage in the early 2000s, as I recall. I have had tinnitus for decades predominantly in my left ear that I find is worsening noticeably with age (now 67). I’ve done my own research and consulted with two Ear, Nose and Throat specialists to conclude that there is no cure. There is a theory that the brain ’fills-in’ auditory gaps caused by hearing loss in high frequency ranges that may be mitigated with a hearing aid. I will be trying this option soon.
The only concert I actually walked out on due to unbearable loudness was Joe Bonamassa at the Meridian Hall in Toronto.