I have played drum set for 38 years, done thousands of loud concerts, & loved loud music shows(I still remember the intense volume Of Mountain in the top, last row of the balcony of the Fillmore East in 1971!). I have often experienced ringing, but it developed into a loud, rushing water sound after a concert about 15 years ago. I also experienced sounds as much louder than normal, so I started wearing headsets at concerts & when I played on stage.
This condition has come & gone over the years. I found that extended periods of quiet really helped. During these times, I tried to not expose myself to any music, TV, or other background noise. I used to drive a 1988 Toyota window van, & found that the high level of road noise from the tires really made it worse. A guy in the band I was playing in owned a tire shop, & he found some tires that were extremely quiet for the van. This helped considerably. I think most people underestimate the level of noise when on the road.
After a number of years of being careful about any noise exposure, the water sounds went away. Recently, the ringing returned. My doctor told me that a number of meds I am now taking can affect it. I lowered the dosage of 2 of the meds & eliminated a third drug, & the ringing went away. Anyone on drugs should ask their doctor about the side effects.