Small Talk - 18  Still enjoying it at eighty

 I am almost 80 years old. For quite some time now, I have been working on inputting classical musics as a habit every morning. I've been doing it while communicating with my teacher over the Internet (online lessons, so to speak), and I've been polishing it little by little. However, a while ago, I had a hearing test at a physical exam...
 However, when I have a hearing test at a physical exam, it has been pointed out that my high frequency hearing is impaired for a while now. The only real problem is that I cannot hear the little beeps (~4000Hz) of a thermometer. It is said that the highest pitch a violin can actually produce is about C8 (4186Hz), so I have no trouble hearing it when I input a normal music....  But as I get older, my listening sensitivity seems to decrease in the same frequency range, so I am a little concerned about the volume of the high notes. So far, my music advisor has not pointed this out to me, so I guess that's a good thing. Translated with DeepL.com (free version)