It’s fairly common for people who are over 25 years of age to not be able to hear above 15Hz

and

Musicians have a much higher risk of hearing loss that most people do

I’ve known my ability to hear high-frequency pitches has been diminishing, as even slightly-misbehaving electronics used to drive me crazy, but don’t anymore: in university, I worked in a department that had a slidemaker that when it was turned on, emitted a high-frequency sound that most people couldn’t hear, but I would have to leave the room or suffer a near-instant head-ache.

One of the joys of getting older, I guess, but as a muscian (and music lover) I’m grateful that I can still hear a normal range of tones.