@AndyD said:
I keep an antique katana in ours, a place both humidity controlled and discreet.
that's interesting! How did you come by this katana?
Re piano buzzing... When I was the "care taker" for a Baldwin Hamilton upright that had clearly seen better days, it was pretty noisy. Then when I switch to the Petrof upright, that piano also had not been well cared for, and it was quite "rickety." It had a lovely, distinctive voice though, so I mostly ignored it.
But when I bought my current piano, a 2000 Yamaha C2, the different was amazing. This piano is so well-made, solid, consistent, reliable.... Yamaha doesn't have its "work horse" reputation for nothing.
This piano is just such a good instrument. Its tone/voice might not be "distinctive" or "unique," but it has zero issues or quirks. No buzzing, clacking, rattling.... And it is so responsive to maintenance.
When I first got it (from someone who didn't take care of it, noticing a pattern here...) it had a weird knock in middle C, inconsistent but very noticeable when it happened. My tech at the time found that the weight in the key was loose, he fixed it right up. Never heard the noise since.
Then, last year I started noticing a clicking noise. My current tech took out the action, tightened up all the screws (literally) and now again, no noises. The piano lived in the south, with a sloppy caretaker, for the first 20 years of its life, and then once I got it, it started to experience pretty consistent climate control, especially in terms of humidity. In winter 2024, I had a dampp chaser installed, and then in spring we moved to our current house, which is the driest house I've ever lived in. So I think once the piano got settled in to its new climate, and got all the residual "over-humid" impacts out, it got a little bit rattle-y. But it's fixed now, and between the lack of buzzes and clacks, and the significant tuning stability, it is just a job to play.
Sorry to go on!!! I just consider myself so lucky to have this instrument!
Here are some pics from "screw-tightening day" 



A modern piano has a lot of screws!!